Yeah, I know what time it is... can't sleep.called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
or so later we had our arrestors.area that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in an
I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've alsoinstalled them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:sitting in the box waiting to be installed tomorrow.
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R is
Hope this helps someone!
Yeah, I know what time it is... can't sleep.called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
or so later we had our arrestors.area that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in an
I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've alsoinstalled them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:sitting in the box waiting to be installed tomorrow.
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R is
Hope this helps someone!
Yeah, I know what time it is... can't sleep.called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in anarea that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,
I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've alsoinstalled them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:sitting in the box waiting to be installed tomorrow.
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R is
Hope this helps someone!
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as a
young electrical engineer at the company I retired from, I happened to
spot an ad in a trade mag from a company called Delta Lightning
Arrestors out of Texas. If I recall correctly, they had developed an
arrestor for use in the oil fields to protect equipment that got
damaged frequently by lightning. They were a small upstart, and had
expanded their offerings to devices that could be used in factories
and at home. One of my coworkers, a guy named Bob Sprinkle who at the
time was one of the top RF design engineers in the southeast, had told
me about an issue at his home. He was at the end of a power line on
his street, the last house fed, and he suffered from destroyed
equipment a couple of times a year during storms. I mentioned the
devices to him, and he wanted to try one. I worked up an order for
4-5 of them, called the company, and a week or so later we had our
arrestors.
They install easily in your breaker box. Two black wires connect to a
large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its rating
are exceeded it can blow a plug out of the case and spill hot silica
(sand). It's rated for 50,000 amps, and I've never heard of one
venting. The device I use is the LA-302R, which is about the size of
a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a year
and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and have
never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website is: >> <deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even though
the light was on.
We have a lot of power surges here. I have about nine UPS's and four of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I don't
want to have to deal with a claim if something gets fried.
On Fri, 5 Aug 2022 00:15:42 -0700 (PDT), "345...@gmail.com" <345...@gmail.com> wrote:called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
area that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,000or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in an
installed them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've also
sitting in the box waiting to be installed tomorrow.They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R is
Hope this helps someone!I was an Installation planning rep in a place that sees almost 200
lightning strikes per square mile every year. (According to the
article in this month's EC&M)
Unplugging everything every afternoon was not an answer the customers
would accept.
We developed some pretty good lightning protection systems. You
certainly need a protective device at the service entrance but that is
just the starting point. That needs to be connected to a good
grounding electrode system with as short a wire as possible. You also
need protective devices on all the other utility inputs (cable, phone,
Sat dish etc), bonded to the same ground point, again with the
shortest wire possible. The NEC has required an available grounding
point for these devices at the service for several cycles. (1999 or
2002 as I recall). Then it is a good idea to have point of use
protectors at any equipment with more than one input (modems, TVs,
phones, cable boxes etc). This should incorporate all inputs and bond
to a single ground (the EGC).
We also bonded all equipment frames that were served from separate
panels but that is usually a commercial situation. Holiday Inn got me
on the phone to find out how we kept their pool bar PCs from being
blown up because it was a problem all over the state. It was an 8ga
copper wire pulled with the ethernet cable.
The lab at State Farm Winter Haven actually came up with that to fix a remote printer problem.
We reduced "lightning calls" from a couple a week to one or two a
year, usually not where we had protection installed.
I also have lightning rods at the house. I don't lose stuff, even with direct hits.
I suppose if you live in a place that doesn't have a thunderstorm
every afternoon for half the year you can just say "there is nothing
that will stop a lightning strike" and just live with stuff being
blown up now and then but that is not an acceptable answer here. It is
sort of like how most folks think about wind storm up north I guess.
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I know what time it is... can't sleep.>>>> Wanted to share some info and experience regarding protecting your >> home from lightning surge damage. In the late '80s while working as a >>young electrical engineer at the company I retired from, I happened to >> spot an ad in a trade mag from a company called Delta Lightning >> Arrestors out of Texas. If I recall correctly, they had developed an >> arrestor for use in the oil fields to
wire version that has both >> white and ground wires. It goes inside the box because if its rating >> are exceeded it can blow a plug out of the case and spill hot silica >> (sand). It's rated for 50,000 amps, and I've never heard of one >> venting.large double-pole breaker (like a 220v, 30-40amp already used for >> water heater, stovetop, air handler, etc.) and the white wire to the >> neutral (white) buss bar or, if you are in an area that does not >> ground the neutral buss, there is a four
"Mr. Luddite" <nothere@noland.com> Wrote in message:rprotect equipment that got >> damaged frequently by lightning. They were a small upstart, and had >> expanded their offerings to devices that could be used in factories >> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >> time
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I know what time it is... can't sleep.>>>> Wanted to share some info and experience regarding protecting your >> home from lightning surge damage. In the late '80s while working as a >young electrical engineer at the company I retired from, I happened to >> spot an ad in a trade mag from a company called Delta Lightning >> Arrestors out of Texas. If I recall correctly, they had developed an >> arrestor for use in the oil fields to
year during storms. I mentioned the >> devices to him, and he wanted to try one. I worked up an order for >> 4-5 of them, called the company, and a week or so later we had our >> arrestors.>>>> They install easily in your breaker box. Two black wiresconnect to a >> large double-pole breaker (like a 220v, 30-40amp already used for >> water heater, stovetop, air handler, etc.) and the white wire to the >> neutral (white) buss bar or, if you are in an area that does not >> ground the neutral buss,
further damage after >> installation and declared it a success. I've used them since in two >> other houses without any failures. I've also installed them for 2 >> other people and have pointed others to them for themselves, and have >> never heard ofany damage afterwards. I believe in them.>>>> They have expanded their business and product offerings over the >> years, and you can even buy some of it through Amazon. Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we bought a
supposed to protect the AC and refrigerators but it doesn't work > well for electronics. I've changed it out every three years even though > the light was on.> > We have a lot of power surges here. I have about nine UPS's and four of > these:> > https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 > > > FPL has a device you can pay for monthly, with a guarantee, but I don't > want to have to deal with a claim if something gets fried.> Something I learned from the
flashing. It is much less likely to developa characteristic impedance to the RF components of thelightening strike while still maintaining an excellentconductor for the DC current components.In the high vacuum deposition systems my company builtwe useda subsystem called an electron beam power supplythat operated at 10K-12K volts DC. Often, any trappedgases within the vacuum chamber or it's internalcomponents (usually residual water vapor) would becomeionized causing an arc discharge similar to
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
On Friday, August 5, 2022 at 5:49:40 PM UTC-4, gfre...@aol.com wrote:called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
On Fri, 5 Aug 2022 00:15:42 -0700 (PDT), "345...@gmail.com"
<345...@gmail.com> wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
area that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,000or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in an
installed them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.
I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've also
sitting in the box waiting to be installed tomorrow.
They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R is
field engineer. Bonding racks and equipment, pulling everything back to big copper buss bars tied to an earth ground "matrix". Installed and protected equipment for Florida Power, CSX RR, Fl. East Coast RR among many others in Fl with no issues. WasI was an Installation planning rep in a place that sees almost 200
Hope this helps someone!
lightning strikes per square mile every year. (According to the
article in this month's EC&M)
Unplugging everything every afternoon was not an answer the customers
would accept.
We developed some pretty good lightning protection systems. You
certainly need a protective device at the service entrance but that is
just the starting point. That needs to be connected to a good
grounding electrode system with as short a wire as possible. You also
need protective devices on all the other utility inputs (cable, phone,
Sat dish etc), bonded to the same ground point, again with the
shortest wire possible. The NEC has required an available grounding
point for these devices at the service for several cycles. (1999 or
2002 as I recall). Then it is a good idea to have point of use
protectors at any equipment with more than one input (modems, TVs,
phones, cable boxes etc). This should incorporate all inputs and bond
to a single ground (the EGC).
We also bonded all equipment frames that were served from separate
panels but that is usually a commercial situation. Holiday Inn got me
on the phone to find out how we kept their pool bar PCs from being
blown up because it was a problem all over the state. It was an 8ga
copper wire pulled with the ethernet cable.
The lab at State Farm Winter Haven actually came up with that to fix a
remote printer problem.
We reduced "lightning calls" from a couple a week to one or two a
year, usually not where we had protection installed.
I also have lightning rods at the house. I don't lose stuff, even with
direct hits.
I suppose if you live in a place that doesn't have a thunderstorm
every afternoon for half the year you can just say "there is nothing
that will stop a lightning strike" and just live with stuff being
blown up now and then but that is not an acceptable answer here. It is
sort of like how most folks think about wind storm up north I guess.
What you are saying is certainly true for large commercial installations. They can't afford any downtime, and the distance of the power runs inside a large facility made them very good antennas for transient induction. I lived that life for years as a
Yes, lightning does find a way. Oh, and it was a repeater site for the forestry service. The winter access was a snow-cat and an access hatch on top of the 3 story structure. Cool stuff.I've taken near direct hits without losing anything. Depending on the quality of the house's grounding system and wiring, YMMV.
I've found that residential really doesn't need the measures dictated by commercial, mission critical stuff. With whole house protection and suppressors/UPS on sensitive equipment I've has no issues, and we have plenty of lightning in the deep south.
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as a
young electrical engineer at the company I retired from, I happened to
spot an ad in a trade mag from a company called Delta Lightning
Arrestors out of Texas. If I recall correctly, they had developed an
arrestor for use in the oil fields to protect equipment that got
damaged frequently by lightning. They were a small upstart, and had
expanded their offerings to devices that could be used in factories
and at home. One of my coworkers, a guy named Bob Sprinkle who at the
time was one of the top RF design engineers in the southeast, had told
me about an issue at his home. He was at the end of a power line on
his street, the last house fed, and he suffered from destroyed
equipment a couple of times a year during storms. I mentioned the
devices to him, and he wanted to try one. I worked up an order for
4-5 of them, called the company, and a week or so later we had our
arrestors.
They install easily in your breaker box. Two black wires connect to a
large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its rating
are exceeded it can blow a plug out of the case and spill hot silica
(sand). It's rated for 50,000 amps, and I've never heard of one
venting. The device I use is the LA-302R, which is about the size of
a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a year
and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and have
never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website is: >>> <deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even though
the light was on.
We have a lot of power surges here. I have about nine UPS's and four of
these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I don't
want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
On 8/6/2022 10:56 AM, justan wrote:protect equipment that got >> damaged frequently by lightning. They were a small upstart, and had >> expanded their offerings to devices that could be used in factories >> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >> time
"Mr. Luddite" <nothere@noland.com> Wrote in message:r
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I know what time it is... can't sleep.>>>> Wanted to share some info and experience regarding protecting your >> home from lightning surge damage. In the late '80s while working as ayoung electrical engineer at the company I retired from, I happened to >> spot an ad in a trade mag from a company called Delta Lightning >> Arrestors out of Texas. If I recall correctly, they had developed an >> arrestor for use in the oil fields to
year during storms. I mentioned the >> devices to him, and he wanted to try one. I worked up an order for >> 4-5 of them, called the company, and a week or so later we had our >> arrestors.>>>> They install easily in your breaker box. Two black wiresconnect to a >> large double-pole breaker (like a 220v, 30-40amp already used for >> water heater, stovetop, air handler, etc.) and the white wire to the >> neutral (white) buss bar or, if you are in an area that does not >> ground the neutral buss,
further damage after >> installation and declared it a success. I've used them since in two >> other houses without any failures. I've also installed them for 2 >> other people and have pointed others to them for themselves, and have >> never heard ofany damage afterwards. I believe in them.>>>> They have expanded their business and product offerings over the >> years, and you can even buy some of it through Amazon. Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we bought a
supposed to protect the AC and refrigerators but it doesn't work > well for electronics. I've changed it out every three years even though > the light was on.> > We have a lot of power surges here. I have about nine UPS's and four of > these:> > https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 > > > FPL has a device you can pay for monthly, with a guarantee, but I don't > want to have to deal with a claim if something gets fried.> Something I learned from the
flashing. It is much less likely to developa characteristic impedance to the RF components of thelightening strike while still maintaining an excellentconductor for the DC current components.In the high vacuum deposition systems my company builtwe useda subsystem called an electron beam power supplythat operated at 10K-12K volts DC. Often, any trappedgases within the vacuum chamber or it's internalcomponents (usually residual water vapor) would becomeionized causing an arc discharge similar to
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
On Sat, 6 Aug 2022 07:05:29 -0700 (PDT), "345...@gmail.com" <345...@gmail.com> wrote:called Delta Lightning Arrestors out of Texas. If I recall correctly, they had developed an arrestor for use in the oil fields to protect equipment that got damaged frequently by lightning. They were a small upstart, and had expanded their offerings to
On Friday, August 5, 2022 at 5:49:40 PM UTC-4, gfre...@aol.com wrote:
On Fri, 5 Aug 2022 00:15:42 -0700 (PDT), "345...@gmail.com"
<345...@gmail.com> wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your home from lightning surge damage. In the late '80s while working as a young electrical engineer at the company I retired from, I happened to spot an ad in a trade mag from a company
an area that does not ground the neutral buss, there is a four wire version that has both white and ground wires. It goes inside the box because if its rating are exceeded it can blow a plug out of the case and spill hot silica (sand). It's rated for 50,or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to a large double-pole breaker (like a 220v, 30-40amp already used for water heater, stovetop, air handler, etc.) and the white wire to the neutral (white) buss bar or, if you are in
installed them for 2 other people and have pointed others to them for themselves, and have never heard of any damage afterwards. I believe in them.
I got updates from Bob all along, but after a little more than a year and several storms, he had sustained no further damage after installation and declared it a success. I've used them since in two other houses without any failures. I've also
is sitting in the box waiting to be installed tomorrow.
They have expanded their business and product offerings over the years, and you can even buy some of it through Amazon. Their website is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't put one on this house yet. Lost the cable modem in a storm just a while back. It it was the only piece of electronics not on a UPS at the time. It is now, and a brand new LA-302R
field engineer. Bonding racks and equipment, pulling everything back to big copper buss bars tied to an earth ground "matrix". Installed and protected equipment for Florida Power, CSX RR, Fl. East Coast RR among many others in Fl with no issues. Was upI was an Installation planning rep in a place that sees almost 200
Hope this helps someone!
lightning strikes per square mile every year. (According to the
article in this month's EC&M)
Unplugging everything every afternoon was not an answer the customers
would accept.
We developed some pretty good lightning protection systems. You
certainly need a protective device at the service entrance but that is
just the starting point. That needs to be connected to a good
grounding electrode system with as short a wire as possible. You also
need protective devices on all the other utility inputs (cable, phone,
Sat dish etc), bonded to the same ground point, again with the
shortest wire possible. The NEC has required an available grounding
point for these devices at the service for several cycles. (1999 or
2002 as I recall). Then it is a good idea to have point of use
protectors at any equipment with more than one input (modems, TVs,
phones, cable boxes etc). This should incorporate all inputs and bond
to a single ground (the EGC).
We also bonded all equipment frames that were served from separate
panels but that is usually a commercial situation. Holiday Inn got me
on the phone to find out how we kept their pool bar PCs from being
blown up because it was a problem all over the state. It was an 8ga
copper wire pulled with the ethernet cable.
The lab at State Farm Winter Haven actually came up with that to fix a
remote printer problem.
We reduced "lightning calls" from a couple a week to one or two a
year, usually not where we had protection installed.
I also have lightning rods at the house. I don't lose stuff, even with
direct hits.
I suppose if you live in a place that doesn't have a thunderstorm
every afternoon for half the year you can just say "there is nothing
that will stop a lightning strike" and just live with stuff being
blown up now and then but that is not an acceptable answer here. It is
sort of like how most folks think about wind storm up north I guess.
What you are saying is certainly true for large commercial installations. They can't afford any downtime, and the distance of the power runs inside a large facility made them very good antennas for transient induction. I lived that life for years as a
I've taken near direct hits without losing anything. Depending on the quality of the house's grounding system and wiring, YMMV.Yes, lightning does find a way. Oh, and it was a repeater site for the forestry service. The winter access was a snow-cat and an access hatch on top of the 3 story structure. Cool stuff.
I've found that residential really doesn't need the measures dictated by commercial, mission critical stuff. With whole house protection and suppressors/UPS on sensitive equipment I've has no issues, and we have plenty of lightning in the deep south.
We had more problems with PCs, terminals and cash registers than
mainframes. That ends up being in a place with more in common with a
home than a glass house computer room.
If you really want to protect the things in your house you need to do
what I said. You need a good grounding system, point of entry
protection on all inputs, connected to that ground electrode system,
then point of use protectors at your multi input equipment. You can certainly skip some of that, depending on your tolerance for replacing
stuff when you get hit.
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I
know what time it is... can't sleep.>>>> Wanted to share some info and >>>> experience regarding protecting your >> home from lightning surge
damage. In the late '80s while working as a >> young electrical
engineer at the company I retired from, I happened to >> spot an ad in >>>> a trade mag from a company called Delta Lightning >> Arrestors out of
Texas. If I recall correctly, they had developed an >> arrestor for
use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>> >> time was one of the top RF design engineers in the southeast, had >>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>> line on >> his street, the last house fed, and he suffered from
destroyed >> equipment a couple of times a
try one. I worked up an order for >> 4-5 of them, called the company,
and a week or so later we had our >> arrestors.>>>> They install easily
in your breaker box. Two black wires connect to a >> large double-pole
breaker (like a 220v, 30-40amp already used for >> water heater,
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the
neutral buss, there is a four wire version that has both >> white and
ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >>
a 12oz drink can but only half as tall.>>>> I got updates from Bob all
along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've
used them since in two >> other houses without any failures. I've also
installed them for 2 >> other people and have pointed others to them for
themselves, and have >> never heard of any damage afterwards. I believe
in them.>>>> They have expanded their business and product offerings
over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we
bought a new house about 8 months ago, and I just hadn't >> put one on
this house yet. Lost the cable modem in a storm just a >> while back.
It it was the only piece of electronics not on a UPS at >> the time. It
is now, and a brand new LA-302R is sitting in the box >> waiting to be
installed tomorrow.>>>> Hope this helps someone!> > I have one of these
installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/supposed to protect the AC and refrigerators but it doesn't work > well
It's
for electronics. I've changed it out every three years even though >
the light was on.> > We have a lot of power surges here. I have about
nine UPS's and four of > these:> >
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
flashing. It is much less likely to developa characteristic impedance toFPL has a device you can pay for monthly, with a guarantee, but I >>>>> don't > want to have to deal with a claim if something gets fried.>
Something I learned from the high vacuum systems biz:A lightening
bolt is a current carrying discharge facilitatedby ionized gas in the >>>>> atmosphere. The "bolt" is considered to beboth direct current
however because it is full of highfrequency AC it is also a high
energy RF discharge.A typical round, heavy grounding wire becomes a
coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to
ground.A much better "ground" wire is a wide conductor likecopper
the RF components of thelightening strike while still maintaining an
excellentconductor for the DC current components.In the high vacuum
deposition systems my company builtwe used a subsystem called an
electron beam power supplythat operated at 10K-12K volts DC. Often, any
trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth,
these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could
set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we
used copper flashing to quench toenergy contained in these arcs. Worked
well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was
a few feet down although they were on 6 feet of fill above that. .
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>> try one. I worked up an order for >> 4-5 of them, called the company,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>> experience regarding protecting your >> home from lightning surge
damage. In the late '80s while working as a >> young electrical
engineer at the company I retired from, I happened to >> spot an ad in >>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>> use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>> >> time was one of the top RF design engineers in the southeast, had >>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>> line on >> his street, the last house fed, and he suffered from
destroyed >> equipment a couple of times a
and a week or so later we had our >> arrestors.>>>> They install easily
in your breaker box. Two black wires connect to a >> large double-pole
breaker (like a 220v, 30-40amp already used for >> water heater,
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the
neutral buss, there is a four wire version that has both >> white and
ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >> >>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all
along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've
used them since in two >> other houses without any failures. I've also
installed them for 2 >> other people and have pointed others to them for >>> themselves, and have >> never heard of any damage afterwards. I believe >>> in them.>>>> They have expanded their business and product offerings
over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we
bought a new house about 8 months ago, and I just hadn't >> put one on
this house yet. Lost the cable modem in a storm just a >> while back.
It it was the only piece of electronics not on a UPS at >> the time. It >>> is now, and a brand new LA-302R is sitting in the box >> waiting to be
installed tomorrow.>>>> Hope this helps someone!> > I have one of these
installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/supposed to protect the AC and refrigerators but it doesn't work > well
It's
for electronics. I've changed it out every three years even though >
the light was on.> > We have a lot of power surges here. I have about
nine UPS's and four of > these:> >
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
flashing. It is much less likely to developa characteristic impedance to >>> the RF components of thelightening strike while still maintaining anFPL has a device you can pay for monthly, with a guarantee, but I >>>>>> don't > want to have to deal with a claim if something gets fried.> >>>>>> Something I learned from the high vacuum systems biz:A lightening
bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>> atmosphere. The "bolt" is considered to beboth direct current
however because it is full of highfrequency AC it is also a high
energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to
ground.A much better "ground" wire is a wide conductor likecopper
excellentconductor for the DC current components.In the high vacuum
deposition systems my company builtwe used a subsystem called an
electron beam power supplythat operated at 10K-12K volts DC. Often, any
trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth,
these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could
set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we
used copper flashing to quench toenergy contained in these arcs. Worked >>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was
a few feet down although they were on 6 feet of fill above that. .
We don’t get much lightning outside of the mountains in California. But >funniest computer grounding problem we came across was both ours and IBM >systems were to a long ground rod in the middle of the building, near the >computer room. Bad grounding problems. Rod was so far from the edge of
the building all the dirt dried out. They installed a watering port and >instructions to poor a bunch of water in there every few months.
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as
a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment
that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob
Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one.
I worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to
a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot
silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website
is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>> try one. I worked up an order for >> 4-5 of them, called the company,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>> experience regarding protecting your >> home from lightning surge
damage. In the late '80s while working as a >> young electrical
engineer at the company I retired from, I happened to >> spot an ad in >>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>> use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>>>> time was one of the top RF design engineers in the southeast, had >>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>> line on >> his street, the last house fed, and he suffered from
destroyed >> equipment a couple of times a
and a week or so later we had our >> arrestors.>>>> They install easily
in your breaker box. Two black wires connect to a >> large double-pole
breaker (like a 220v, 30-40amp already used for >> water heater,
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the
neutral buss, there is a four wire version that has both >> white and
ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >> >>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all
along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've
used them since in two >> other houses without any failures. I've also
installed them for 2 >> other people and have pointed others to them for >>> themselves, and have >> never heard of any damage afterwards. I believe >>> in them.>>>> They have expanded their business and product offerings
over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we
bought a new house about 8 months ago, and I just hadn't >> put one on
this house yet. Lost the cable modem in a storm just a >> while back.
It it was the only piece of electronics not on a UPS at >> the time. It >>> is now, and a brand new LA-302R is sitting in the box >> waiting to be
installed tomorrow.>>>> Hope this helps someone!> > I have one of these
installed:
> https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
supposed to protect the AC and refrigerators but it doesn't work > wellIt's
for electronics. I've changed it out every three years even though >
the light was on.> > We have a lot of power surges here. I have about
nine UPS's and four of > these:> >
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
flashing. It is much less likely to developa characteristic impedance to >>> the RF components of thelightening strike while still maintaining anFPL has a device you can pay for monthly, with a guarantee, but I
don't > want to have to deal with a claim if something gets fried.> >>>>>> Something I learned from the high vacuum systems biz:A lightening
bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>> atmosphere. The "bolt" is considered to beboth direct current
however because it is full of highfrequency AC it is also a high
energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to
ground.A much better "ground" wire is a wide conductor likecopper
excellentconductor for the DC current components.In the high vacuum
deposition systems my company builtwe used a subsystem called an
electron beam power supplythat operated at 10K-12K volts DC. Often, any
trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth,
these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could
set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we
used copper flashing to quench toenergy contained in these arcs. Worked >>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was
a few feet down although they were on 6 feet of fill above that. .
We don’t get much lightning outside of the mountains in California. But funniest computer grounding problem we came across was both ours and IBM systems were to a long ground rod in the middle of the building, near the computer room. Bad grounding problems. Rod was so far from the edge of
the building all the dirt dried out. They installed a watering port and instructions to poor a bunch of water in there every few months.
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as
a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment
that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob
Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. I
worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to
a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot
silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website
is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much higher than the house and we have a concrete tile roof. I'm just trying to protect my stuff from surges and brownouts.
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as
a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment
that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob
Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one.
I worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to
a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot
silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website
is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as >>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment >>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob >>>>> Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. >>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>> a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the >>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>> other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at >>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
On 8/7/2022 1:32 AM, Alex wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as >>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment >>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob >>>>> Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. I >>>>> worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>> a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the >>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>> other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at >>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying >> to protect my stuff from surges and brownouts.
I lost faith in the "highest point" gets struck theory when I was a kid
and a lightening bolt hit a folded metal table leaning against our
cottage under a huge oak tree. Burned a hole in the middle of the
table. Tree wasn't hit at all.
We had far more electrical service problems in Florida than we do up
here in MA. Lots of brownouts in Florida.
On 8/7/2022 1:32 AM, Alex wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as >>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment >>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob >>>>> Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. I >>>>> worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>> a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the >>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>> other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at >>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying >> to protect my stuff from surges and brownouts.
I lost faith in the "highest point" gets struck theory when I was a kid
and a lightening bolt hit a folded metal table leaning against our
cottage under a huge oak tree. Burned a hole in the middle of the
table. Tree wasn't hit at all.
We had far more electrical service problems in Florida than we do up
here in MA. Lots of brownouts in Florida.
On Sun, 7 Aug 2022 06:44:03 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 9:30 PM, Bill wrote:
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>>>> try one. I worked up an order for >> 4-5 of them, called the company, >>>>> and a week or so later we had our >> arrestors.>>>> They install easily >>>>> in your breaker box. Two black wires connect to a >> large double-pole >>>>> breaker (like a 220v, 30-40amp already used for >> water heater,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>>>> experience regarding protecting your >> home from lightning surge >>>>>>> damage. In the late '80s while working as a >> young electrical >>>>>>> engineer at the company I retired from, I happened to >> spot an ad in >>>>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>>>> use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>>>>>> time was one of the top RF design engineers in the southeast, had >>>>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>>>> line on >> his street, the last house fed, and he suffered from >>>>>>>>> destroyed >> equipment a couple of times a
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the >>>>> neutral buss, there is a four wire version that has both >> white and >>>>> ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >> >>>>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all >>>>> along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've >>>>> used them since in two >> other houses without any failures. I've also >>>>> installed them for 2 >> other people and have pointed others to them for >>>>> themselves, and have >> never heard of any damage afterwards. I believe >>>>> in them.>>>> They have expanded their business and product offerings >>>>> over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we >>>>> bought a new house about 8 months ago, and I just hadn't >> put one on >>>>> this house yet. Lost the cable modem in a storm just a >> while back. >>>>> It it was the only piece of electronics not on a UPS at >> the time. It >>>>> is now, and a brand new LA-302R is sitting in the box >> waiting to be >>>>> installed tomorrow.>>>> Hope this helps someone!> > I have one of these >>>>> installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/supposed to protect the AC and refrigerators but it doesn't work > well >>>>> for electronics. I've changed it out every three years even though > >>>>> the light was on.> > We have a lot of power surges here. I have about >>>>> nine UPS's and four of > these:> >
It's
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
deposition systems my company builtwe used a subsystem called anFPL has a device you can pay for monthly, with a guarantee, but I >>>>>>>> don't > want to have to deal with a claim if something gets fried.> >>>>>>>> Something I learned from the high vacuum systems biz:A lightening >>>>>>>> bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>>>> atmosphere. The "bolt" is considered to beboth direct current >>>>>>>> however because it is full of highfrequency AC it is also a high >>>>>>>> energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to >>>>>>>> ground.A much better "ground" wire is a wide conductor likecopper >>>>> flashing. It is much less likely to developa characteristic impedance to >>>>> the RF components of thelightening strike while still maintaining an >>>>> excellentconductor for the DC current components.In the high vacuum
electron beam power supplythat operated at 10K-12K volts DC. Often, any >>>>> trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth, >>>>> these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could >>>>> set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we >>>>> used copper flashing to quench toenergy contained in these arcs. Worked >>>>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was >>>> a few feet down although they were on 6 feet of fill above that. .
We don’t get much lightning outside of the mountains in California. But >>> funniest computer grounding problem we came across was both ours and IBM >>> systems were to a long ground rod in the middle of the building, near the >>> computer room. Bad grounding problems. Rod was so far from the edge of >>> the building all the dirt dried out. They installed a watering port and >>> instructions to poor a bunch of water in there every few months.
To provide a ground plane for the systems we built, we put two 8' ground
rods through the concrete shop floor, about 15 feet apart from each
other. Then, we mixed a solution of water and copper sulfate and poured
the solution into the ground beside the ground rods until the measured
resistance between the rods dropped significantly.
The NEC rule is <25 ohms to a "ground" the survey establishes with a
number of rods. Nobody really does that so the option is 2 rods >6'
apart. NFPA also knows rods suck so any similar "Made" electrode (pipe
or plate) only requires a 6ga wire max. That is all they can expect to handle. Concrete encased electrodes (Ufer) requires a #4 max and
building steel or a metal water pipe gets sized to the service
conductors.
On 8/6/2022 9:30 PM, Bill wrote:
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>>> try one. I worked up an order for >> 4-5 of them, called the company, >>>> and a week or so later we had our >> arrestors.>>>> They install easily >>>> in your breaker box. Two black wires connect to a >> large double-pole >>>> breaker (like a 220v, 30-40amp already used for >> water heater,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>>> experience regarding protecting your >> home from lightning surge
damage. In the late '80s while working as a >> young electrical
engineer at the company I retired from, I happened to >> spot an ad in >>>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>>> use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>>>>> time was one of the top RF design engineers in the southeast, had >>>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>>> line on >> his street, the last house fed, and he suffered from >>>>>>>> destroyed >> equipment a couple of times a
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the >>>> neutral buss, there is a four wire version that has both >> white and
ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >> >>>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all >>>> along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've
used them since in two >> other houses without any failures. I've also >>>> installed them for 2 >> other people and have pointed others to them for >>>> themselves, and have >> never heard of any damage afterwards. I believe >>>> in them.>>>> They have expanded their business and product offerings
over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we >>>> bought a new house about 8 months ago, and I just hadn't >> put one on >>>> this house yet. Lost the cable modem in a storm just a >> while back. >>>> It it was the only piece of electronics not on a UPS at >> the time. It >>>> is now, and a brand new LA-302R is sitting in the box >> waiting to be >>>> installed tomorrow.>>>> Hope this helps someone!> > I have one of these >>>> installed:
> https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
supposed to protect the AC and refrigerators but it doesn't work > well >>>> for electronics. I've changed it out every three years even though >It's
the light was on.> > We have a lot of power surges here. I have about >>>> nine UPS's and four of > these:> >
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
flashing. It is much less likely to developa characteristic impedance to >>>> the RF components of thelightening strike while still maintaining anFPL has a device you can pay for monthly, with a guarantee, but I >>>>>>> don't > want to have to deal with a claim if something gets fried.> >>>>>>> Something I learned from the high vacuum systems biz:A lightening >>>>>>> bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>>> atmosphere. The "bolt" is considered to beboth direct current
however because it is full of highfrequency AC it is also a high >>>>>>> energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to
ground.A much better "ground" wire is a wide conductor likecopper
excellentconductor for the DC current components.In the high vacuum
deposition systems my company builtwe used a subsystem called an
electron beam power supplythat operated at 10K-12K volts DC. Often, any >>>> trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth,
these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could >>>> set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we
used copper flashing to quench toenergy contained in these arcs. Worked >>>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was
a few feet down although they were on 6 feet of fill above that. .
We don’t get much lightning outside of the mountains in California. But >> funniest computer grounding problem we came across was both ours and IBM
systems were to a long ground rod in the middle of the building, near the
computer room. Bad grounding problems. Rod was so far from the edge of
the building all the dirt dried out. They installed a watering port and
instructions to poor a bunch of water in there every few months.
To provide a ground plane for the systems we built, we put two 8' ground
rods through the concrete shop floor, about 15 feet apart from each
other. Then, we mixed a solution of water and copper sulfate and poured
the solution into the ground beside the ground rods until the measured >resistance between the rods dropped significantly.
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>> home from lightning surge damage. In the late '80s while working as >>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>> the southeast, had told me about an issue at his home. He was at >>>>>> the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. >>>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both >>>>>> white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>>> other houses without any failures. I've also installed them for 2 >>>>>> other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>> well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying >>> to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
Water restrictions here, so people taking out lawns.
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xel...@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as >>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment >>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob >>>> Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one.
I worked up an order for 4-5 of them, called the company, and a week >>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>> a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the >>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>> silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>> other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at >>>> the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much >higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
On Sun, 7 Aug 2022 07:04:33 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/7/2022 1:32 AM, Alex wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>> home from lightning surge damage. In the late '80s while working as >>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>> the southeast, had told me about an issue at his home. He was at >>>>>> the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. I >>>>>> worked up an order for 4-5 of them, called the company, and a week >>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both >>>>>> white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>>> other houses without any failures. I've also installed them for 2 >>>>>> other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>> well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying >>> to protect my stuff from surges and brownouts.
I lost faith in the "highest point" gets struck theory when I was a kid
and a lightening bolt hit a folded metal table leaning against our
cottage under a huge oak tree. Burned a hole in the middle of the
table. Tree wasn't hit at all.
We had far more electrical service problems in Florida than we do up
here in MA. Lots of brownouts in Florida.
The first flaw is thinking lightning only hits one thing. It is more
of a shotgun than a rifle.
This is a classic example of the adage "Current doesn't take the path
of least resistance, it takes all paths". Mr Ohm tells us how that
current is divided up but in the case of lightning, there is plenty
available for everyone. That's why you don't even want to be near
something it hits.
The brownout thing must be an east coast thing. Our power is very
reliable and generally cruises at 123+v. I keep a Weston 901 meter
connected all the time in the computer room on the far end of the
house from the service entrance. I never see it below 121 or so and it
is rare that I don't have 123. We do get some anomalies but not many.
I also have a Dranitz 626 line monitor but I don't leave that
connected. The paper is expensive. I hooked it up in our office
downtown and went through a whole roll in a weekend. I had around 2-3
events a week here. The distribution station is at the end of my
street tho. They step the 230kv down to 13.5kv medium voltage street
feeder there.
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>> home from lightning surge damage. In the late '80s while working as >>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>> the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one. >>>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>> neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both >>>>>> white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>> one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two >>>>>> other houses without any failures. I've also installed them for 2 >>>>>> other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website >>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>> well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying >>> to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
Water restrictions here, so people taking out lawns.
On Sun, 7 Aug 2022 06:44:03 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 9:30 PM, Bill wrote:
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>>>> try one. I worked up an order for >> 4-5 of them, called the company, >>>>> and a week or so later we had our >> arrestors.>>>> They install easily >>>>> in your breaker box. Two black wires connect to a >> large double-pole >>>>> breaker (like a 220v, 30-40amp already used for >> water heater,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>>>> experience regarding protecting your >> home from lightning surge >>>>>>> damage. In the late '80s while working as a >> young electrical >>>>>>> engineer at the company I retired from, I happened to >> spot an ad in >>>>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>>>> use in the oil fields to protect equipment that got >> damaged
frequently by lightning. They were a small upstart, and had >>
expanded their offerings to devices that could be used in factories >> >>>>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>>>>>> time was one of the top RF design engineers in the southeast, had >>>>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>>>> line on >> his street, the last house fed, and he suffered from >>>>>>>>> destroyed >> equipment a couple of times a
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the >>>>> neutral buss, there is a four wire version that has both >> white and >>>>> ground wires. It goes inside the box because if its rating >> are
exceeded it can blow a plug out of the case and spill hot silica >>
(sand). It's rated for 50,000 amps, and I've never heard of one >>
venting. The device I use is the LA-302R, which is about the size of >> >>>>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all >>>>> along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've >>>>> used them since in two >> other houses without any failures. I've also >>>>> installed them for 2 >> other people and have pointed others to them for >>>>> themselves, and have >> never heard of any damage afterwards. I believe >>>>> in them.>>>> They have expanded their business and product offerings >>>>> over the >> years, and you can even buy some of it through Amazon.
Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we >>>>> bought a new house about 8 months ago, and I just hadn't >> put one on >>>>> this house yet. Lost the cable modem in a storm just a >> while back. >>>>> It it was the only piece of electronics not on a UPS at >> the time. It >>>>> is now, and a brand new LA-302R is sitting in the box >> waiting to be >>>>> installed tomorrow.>>>> Hope this helps someone!> > I have one of these >>>>> installed:
> https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
supposed to protect the AC and refrigerators but it doesn't work > well >>>>> for electronics. I've changed it out every three years even though > >>>>> the light was on.> > We have a lot of power surges here. I have about >>>>> nine UPS's and four of > these:> >It's
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
deposition systems my company builtwe used a subsystem called anFPL has a device you can pay for monthly, with a guarantee, but I >>>>>>>> don't > want to have to deal with a claim if something gets fried.> >>>>>>>> Something I learned from the high vacuum systems biz:A lightening >>>>>>>> bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>>>> atmosphere. The "bolt" is considered to beboth direct current >>>>>>>> however because it is full of highfrequency AC it is also a high >>>>>>>> energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to >>>>>>>> ground.A much better "ground" wire is a wide conductor likecopper >>>>> flashing. It is much less likely to developa characteristic impedance to >>>>> the RF components of thelightening strike while still maintaining an >>>>> excellentconductor for the DC current components.In the high vacuum
electron beam power supplythat operated at 10K-12K volts DC. Often, any >>>>> trappedgases within the vacuum chamber or it's internalcomponents
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth, >>>>> these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could >>>>> set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we >>>>> used copper flashing to quench toenergy contained in these arcs. Worked >>>>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen
the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99
toll booth I worked on. That was in a swamp where the ground water was >>>> a few feet down although they were on 6 feet of fill above that. .
We dont get much lightning outside of the mountains in California. But >>> funniest computer grounding problem we came across was both ours and IBM >>> systems were to a long ground rod in the middle of the building, near the >>> computer room. Bad grounding problems. Rod was so far from the edge of >>> the building all the dirt dried out. They installed a watering port and >>> instructions to poor a bunch of water in there every few months.
To provide a ground plane for the systems we built, we put two 8' ground >>rods through the concrete shop floor, about 15 feet apart from each
other. Then, we mixed a solution of water and copper sulfate and poured >>the solution into the ground beside the ground rods until the measured >>resistance between the rods dropped significantly.
The NEC rule is <25 ohms to a "ground" the survey establishes with a
number of rods. Nobody really does that so the option is 2 rods >6'
apart. NFPA also knows rods suck so any similar "Made" electrode (pipe
or plate) only requires a 6ga wire max. That is all they can expect to >handle. Concrete encased electrodes (Ufer) requires a #4 max and
building steel or a metal water pipe gets sized to the service
conductors.
<gfretwell@aol.com> wrote:
On Sun, 7 Aug 2022 06:44:03 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/6/2022 9:30 PM, Bill wrote:
<gfretwell@aol.com> wrote:
On Sat, 6 Aug 2022 12:25:55 -0400, "Mr. Luddite" <nothere@noland.com> >>>>> wrote:
On 8/6/2022 10:56 AM, justan wrote:
"Mr. Luddite" <nothere@noland.com> Wrote in message:ryear during storms. I mentioned the >> devices to him, and he wanted to >>>>>> try one. I worked up an order for >> 4-5 of them, called the company, >>>>>> and a week or so later we had our >> arrestors.>>>> They install easily >>>>>> in your breaker box. Two black wires connect to a >> large double-pole >>>>>> breaker (like a 220v, 30-40amp already used for >> water heater,
On 8/5/2022 10:34 PM, Alex wrote:> 345...@gmail.com wrote:>> Yeah, I >>>>>>>> know what time it is... can't sleep.>>>> Wanted to share some info and >>>>>>>> experience regarding protecting your >> home from lightning surge >>>>>>>> damage. In the late '80s while working as a >> young electrical >>>>>>>> engineer at the company I retired from, I happened to >> spot an ad in >>>>>>>> a trade mag from a company called Delta Lightning >> Arrestors out of >>>>>>>> Texas. If I recall correctly, they had developed an >> arrestor for >>>>>>>> use in the oil fields to protect equipment that got >> damaged >>>>>>>> frequently by lightning. They were a small upstart, and had >> >>>>>>>> expanded their offerings to devices that could be used in factories >> >>>>>>>> and at home. One of my coworkers, a guy named Bob Sprinkle who at the >>>>>>>>>> time was one of the top RF design engineers in the southeast, had >>>>>>>>>> told >> me about an issue at his home. He was at the end of a power >>>>>>>>>> line on >> his street, the last house fed, and he suffered from >>>>>>>>>> destroyed >> equipment a couple of times a
stovetop, air handler, etc.) and the white wire to the >> neutral
(white) buss bar or, if you are in an area that does not >> ground the >>>>>> neutral buss, there is a four wire version that has both >> white and >>>>>> ground wires. It goes inside the box because if its rating >> are >>>>>> exceeded it can blow a plug out of the case and spill hot silica >> >>>>>> (sand). It's rated for 50,000 amps, and I've never heard of one >> >>>>>> venting. The device I use is the LA-302R, which is about the size of >> >>>>>> a 12oz drink can but only half as tall.>>>> I got updates from Bob all >>>>>> along, but after a little more than a year >> and several storms, he had sustained no
further damage after >> installation and declared it a success. I've >>>>>> used them since in two >> other houses without any failures. I've also >>>>>> installed them for 2 >> other people and have pointed others to them for >>>>>> themselves, and have >> never heard of any damage afterwards. I believe >>>>>> in them.>>>> They have expanded their business and product offerings >>>>>> over the >> years, and you can even buy some of it through Amazon. >>>>>> Their website is:>> <deltala.com> Some good info there.>>>> Oh, and we >>>>>> bought a new house about 8 months ago, and I just hadn't >> put one on >>>>>> this house yet. Lost the cable modem in a storm just a >> while back. >>>>>> It it was the only piece of electronics not on a UPS at >> the time. It >>>>>> is now, and a brand new LA-302R is sitting in the box >> waiting to be >>>>>> installed tomorrow.>>>> Hope this helps someone!> > I have one of these >>>>>> installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/supposed to protect the AC and refrigerators but it doesn't work > well >>>>>> for electronics. I've changed it out every three years even though > >>>>>> the light was on.> > We have a lot of power surges here. I have about >>>>>> nine UPS's and four of > these:> >
It's
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
electron beam power supplythat operated at 10K-12K volts DC. Often, any >>>>>> trappedgases within the vacuum chamber or it's internalcomponentsFPL has a device you can pay for monthly, with a guarantee, but I >>>>>>>>> don't > want to have to deal with a claim if something gets fried.> >>>>>>>>> Something I learned from the high vacuum systems biz:A lightening >>>>>>>>> bolt is a current carrying discharge facilitatedby ionized gas in the >>>>>>>>> atmosphere. The "bolt" is considered to beboth direct current >>>>>>>>> however because it is full of highfrequency AC it is also a high >>>>>>>>> energy RF discharge.A typical round, heavy grounding wire becomes a >>>>>>>>> coil to theRF components in the discharge and sets up a
characteristicimpedance to the current the wire is intended to >>>>>>>>> ground.A much better "ground" wire is a wide conductor likecopper >>>>>> flashing. It is much less likely to developa characteristic impedance to >>>>>> the RF components of thelightening strike while still maintaining an >>>>>> excellentconductor for the DC current components.In the high vacuum >>>>>> deposition systems my company builtwe used a subsystem called an
(usually residual water vapor) would becomeionized causing an arc
discharge similar to lightening.If not adequately grounded to earth, >>>>>> these arcs couldbecome severe enough to damage other components
thatoperated at low voltages like computers or PLC's.Providing an
effective grounding systems was trickysometimes. Over-grounding could >>>>>> set up ground loopssometimes causing more damage than what they
wereintended to prevent. Instead of using heavy copperground wire we >>>>>> used copper flashing to quench toenergy contained in these arcs. Worked >>>>>> well.-- This email has been checked for
viruses by AVG.https://www.avg.com
What are the electrical characteristics of asphault. :-)
Lets go Brandon....
----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
Don't know but I think it has more to do with what's
*under* the asphalt.
In Florida it is sand and not a really good conductor. Have you seen >>>>> the fulgurites they have dug up here? The ionized path through the
sand creates interesting glass structures.
FPL figured out a power line can still be hit 6-8 feet underground.
DOT is scared of lightning too.
They used 40' rods and a ground ring, all Cad Welded around the MM99 >>>>> toll booth I worked on. That was in a swamp where the ground water was >>>>> a few feet down although they were on 6 feet of fill above that. .
We don’t get much lightning outside of the mountains in California. But
funniest computer grounding problem we came across was both ours and IBM >>>> systems were to a long ground rod in the middle of the building, near the >>>> computer room. Bad grounding problems. Rod was so far from the edge of >>>> the building all the dirt dried out. They installed a watering port and >>>> instructions to poor a bunch of water in there every few months.
To provide a ground plane for the systems we built, we put two 8' ground >>> rods through the concrete shop floor, about 15 feet apart from each
other. Then, we mixed a solution of water and copper sulfate and poured >>> the solution into the ground beside the ground rods until the measured
resistance between the rods dropped significantly.
The NEC rule is <25 ohms to a "ground" the survey establishes with a
number of rods. Nobody really does that so the option is 2 rods >6'
apart. NFPA also knows rods suck so any similar "Made" electrode (pipe
or plate) only requires a 6ga wire max. That is all they can expect to
handle. Concrete encased electrodes (Ufer) requires a #4 max and
building steel or a metal water pipe gets sized to the service
conductors.
Why would they specify 6ga or 4ga “max” and not min?
On Sunday, August 7, 2022 at 8:06:09 AM UTC-4, John H wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xel...@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as
a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment
that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob
Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one.
I worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to
a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot
silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website
is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
We cleared and graded a ~300 x 200ft area of trees and undergrowth on
the hill in our backyard. ~100 ft of 5-7 ft tall block retaining wall. >Putting in irrigation, lots of plants and trees, ground cover, and drainage. >Mon/Tues is sod day, putting down around 3000 sq. ft. Doing most of the
rest in hydraseed or just seeding with hay.
An area will be a rock garden with plants and a fountain.
All this after adding a portico on the back of the house by extending the roofline
over some existing concrete and doing the ceiling, columns and trim in natural wood
sealed in clear. And adding another 8 ft clear inside an addition to the detached garage
in brick and extended roofline to match for lawnmower and yard tool storage, among
other stuff.
Just doing the new pool we decided against would have been about the same cost.
I'm done.
On Sunday, August 7, 2022 at 8:06:09 AM UTC-4, John H wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xel...@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your
home from lightning surge damage. In the late '80s while working as
a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta
Lightning Arrestors out of Texas. If I recall correctly, they had
developed an arrestor for use in the oil fields to protect equipment
that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be
used in factories and at home. One of my coworkers, a guy named Bob
Sprinkle who at the time was one of the top RF design engineers in
the southeast, had told me about an issue at his home. He was at
the end of a power line on his street, the last house fed, and he
suffered from destroyed equipment a couple of times a year during
storms. I mentioned the devices to him, and he wanted to try one.
I worked up an order for 4-5 of them, called the company, and a week
or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to
a large double-pole breaker (like a 220v, 30-40amp already used for
water heater, stovetop, air handler, etc.) and the white wire to the
neutral (white) buss bar or, if you are in an area that does not
ground the neutral buss, there is a four wire version that has both
white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot
silica (sand). It's rated for 50,000 amps, and I've never heard of
one venting. The device I use is the LA-302R, which is about the
size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a
year and several storms, he had sustained no further damage after
installation and declared it a success. I've used them since in two
other houses without any failures. I've also installed them for 2
other people and have pointed others to them for themselves, and
have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the
years, and you can even buy some of it through Amazon. Their website
is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't
put one on this house yet. Lost the cable modem in a storm just a
while back. It it was the only piece of electronics not on a UPS at
the time. It is now, and a brand new LA-302R is sitting in the box
waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work
well for electronics. I've changed it out every three years even
though the light was on.
We have a lot of power surges here. I have about nine UPS's and four
of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much
higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
We cleared and graded a ~300 x 200ft area of trees and undergrowth on
the hill in our backyard. ~100 ft of 5-7 ft tall block retaining wall. >Putting in irrigation, lots of plants and trees, ground cover, and drainage. >Mon/Tues is sod day, putting down around 3000 sq. ft. Doing most of the
rest in hydraseed or just seeding with hay.
An area will be a rock garden with plants and a fountain.
All this after adding a portico on the back of the house by extending the roofline
over some existing concrete and doing the ceiling, columns and trim in natural wood
sealed in clear. And adding another 8 ft clear inside an addition to the detached garage
in brick and extended roofline to match for lawnmower and yard tool storage, among
other stuff.
Just doing the new pool we decided against would have been about the same cost.
I'm done.
On 8/7/2022 12:42 PM, gfretwell@aol.com wrote:
On Sun, 7 Aug 2022 07:04:33 -0400, "Mr. Luddite" <nothere@noland.com>
wrote:
On 8/7/2022 1:32 AM, Alex wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>>> home from lightning surge damage. In the late '80s while working as >>>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta >>>>>>> Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>>> the southeast, had told me about an issue at his home. He was at >>>>>>> the end of a power line on his street, the last house fed, and he >>>>>>> suffered from destroyed equipment a couple of times a year during >>>>>>> storms. I mentioned the devices to him, and he wanted to try one. I >>>>>>> worked up an order for 4-5 of them, called the company, and a week >>>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>>> neutral (white) buss bar or, if you are in an area that does not >>>>>>> ground the neutral buss, there is a four wire version that has both >>>>>>> white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>>> one venting. The device I use is the LA-302R, which is about the >>>>>>> size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a >>>>>>> year and several storms, he had sustained no further damage after >>>>>>> installation and declared it a success. I've used them since in two >>>>>>> other houses without any failures. I've also installed them for 2 >>>>>>> other people and have pointed others to them for themselves, and >>>>>>> have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the >>>>>>> years, and you can even buy some of it through Amazon. Their website >>>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>>> well for electronics. I've changed it out every three years even >>>>>> though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much >>>> higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
I lost faith in the "highest point" gets struck theory when I was a kid
and a lightening bolt hit a folded metal table leaning against our
cottage under a huge oak tree. Burned a hole in the middle of the
table. Tree wasn't hit at all.
We had far more electrical service problems in Florida than we do up
here in MA. Lots of brownouts in Florida.
The first flaw is thinking lightning only hits one thing. It is more
of a shotgun than a rifle.
This is a classic example of the adage "Current doesn't take the path
of least resistance, it takes all paths". Mr Ohm tells us how that
current is divided up but in the case of lightning, there is plenty
available for everyone. That's why you don't even want to be near
something it hits.
The brownout thing must be an east coast thing. Our power is very
reliable and generally cruises at 123+v. I keep a Weston 901 meter
connected all the time in the computer room on the far end of the
house from the service entrance. I never see it below 121 or so and it
is rare that I don't have 123. We do get some anomalies but not many.
I also have a Dranitz 626 line monitor but I don't leave that
connected. The paper is expensive. I hooked it up in our office
downtown and went through a whole roll in a weekend. I had around 2-3
events a week here. The distribution station is at the end of my
street tho. They step the 230kv down to 13.5kv medium voltage street
feeder there.
I had to get a buck/boost transformer for the RV in Florida.
There were days the 123v line would drop to 110v or less.
On Sun, 7 Aug 2022 15:59:10 -0000 (UTC), Bill <califbill9998remove8@gmail.com> wrote:
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>>> home from lightning surge damage. In the late '80s while working as >>>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta >>>>>>> Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>>> the southeast, had told me about an issue at his home. He was at >>>>>>> the end of a power line on his street, the last house fed, and he >>>>>>> suffered from destroyed equipment a couple of times a year during >>>>>>> storms. I mentioned the devices to him, and he wanted to try one. >>>>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>>> neutral (white) buss bar or, if you are in an area that does not >>>>>>> ground the neutral buss, there is a four wire version that has both >>>>>>> white and ground wires. It goes inside the box because if its
rating are exceeded it can blow a plug out of the case and spill hot >>>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>>> one venting. The device I use is the LA-302R, which is about the >>>>>>> size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a >>>>>>> year and several storms, he had sustained no further damage after >>>>>>> installation and declared it a success. I've used them since in two >>>>>>> other houses without any failures. I've also installed them for 2 >>>>>>> other people and have pointed others to them for themselves, and >>>>>>> have never heard of any damage afterwards. I believe in them.
They have expanded their business and product offerings over the >>>>>>> years, and you can even buy some of it through Amazon. Their website >>>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>>> well for electronics. I've changed it out every three years even >>>>>> though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I
don't want to have to deal with a claim if something gets fried.
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be
both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much >>>> higher than the house and we have a concrete tile roof. I'm just trying >>>> to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
Water restrictions here, so people taking out lawns.
A neighbor couple houses down in Tampa ripped up his front yard and
put gravel down. Built a concrete platform, painted it green, and put
his lawn mower, also green, on the platform. Looked pretty damn good.
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 15:59:10 -0000 (UTC), Bill
<califbill9998remove8@gmail.com> wrote:
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>>>> home from lightning surge damage. In the late '80s while working as >>>>>>>> a young electrical engineer at the company I retired from, I
happened to spot an ad in a trade mag from a company called Delta >>>>>>>> Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>>>> that got damaged frequently by lightning. They were a small
upstart, and had expanded their offerings to devices that could be >>>>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>>>> the southeast, had told me about an issue at his home. He was at >>>>>>>> the end of a power line on his street, the last house fed, and he >>>>>>>> suffered from destroyed equipment a couple of times a year during >>>>>>>> storms. I mentioned the devices to him, and he wanted to try one. >>>>>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>>>> neutral (white) buss bar or, if you are in an area that does not >>>>>>>> ground the neutral buss, there is a four wire version that has both >>>>>>>> white and ground wires. It goes inside the box because if its >>>>>>>> rating are exceeded it can blow a plug out of the case and spill hot >>>>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>>>> one venting. The device I use is the LA-302R, which is about the >>>>>>>> size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a >>>>>>>> year and several storms, he had sustained no further damage after >>>>>>>> installation and declared it a success. I've used them since in two >>>>>>>> other houses without any failures. I've also installed them for 2 >>>>>>>> other people and have pointed others to them for themselves, and >>>>>>>> have never heard of any damage afterwards. I believe in them. >>>>>>>>
They have expanded their business and product offerings over the >>>>>>>> years, and you can even buy some of it through Amazon. Their website >>>>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>>>> well for electronics. I've changed it out every three years even >>>>>>> though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I >>>>>>> don't want to have to deal with a claim if something gets fried. >>>>>>>
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be >>>>>> both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much >>>>> higher than the house and we have a concrete tile roof. I'm just trying >>>>> to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
Water restrictions here, so people taking out lawns.
A neighbor couple houses down in Tampa ripped up his front yard and
put gravel down. Built a concrete platform, painted it green, and put
his lawn mower, also green, on the platform. Looked pretty damn good.
Years ago, was a gas station on Altamont pass, that had faux grass and a >lawnmower on it. Lawnmower lasted for years after the station was tore >down.
On Wed, 10 Aug 2022 01:31:19 -0000 (UTC), Bill <califbill9998remove8@gmail.com> wrote:
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 15:59:10 -0000 (UTC), Bill
<califbill9998remove8@gmail.com> wrote:
John H <jherring@cox.net> wrote:
On Sun, 7 Aug 2022 01:32:52 -0400, Alex <Xela777@gmail.com> wrote:
Mr. Luddite wrote:
On 8/5/2022 10:34 PM, Alex wrote:
345...@gmail.com wrote:
Yeah, I know what time it is... can't sleep.
Wanted to share some info and experience regarding protecting your >>>>>>>>> home from lightning surge damage. In the late '80s while working as >>>>>>>>> a young electrical engineer at the company I retired from, I >>>>>>>>> happened to spot an ad in a trade mag from a company called Delta >>>>>>>>> Lightning Arrestors out of Texas. If I recall correctly, they had >>>>>>>>> developed an arrestor for use in the oil fields to protect equipment >>>>>>>>> that got damaged frequently by lightning. They were a small >>>>>>>>> upstart, and had expanded their offerings to devices that could be >>>>>>>>> used in factories and at home. One of my coworkers, a guy named Bob >>>>>>>>> Sprinkle who at the time was one of the top RF design engineers in >>>>>>>>> the southeast, had told me about an issue at his home. He was at >>>>>>>>> the end of a power line on his street, the last house fed, and he >>>>>>>>> suffered from destroyed equipment a couple of times a year during >>>>>>>>> storms. I mentioned the devices to him, and he wanted to try one. >>>>>>>>> I worked up an order for 4-5 of them, called the company, and a week >>>>>>>>> or so later we had our arrestors.
They install easily in your breaker box. Two black wires connect to >>>>>>>>> a large double-pole breaker (like a 220v, 30-40amp already used for >>>>>>>>> water heater, stovetop, air handler, etc.) and the white wire to the >>>>>>>>> neutral (white) buss bar or, if you are in an area that does not >>>>>>>>> ground the neutral buss, there is a four wire version that has both >>>>>>>>> white and ground wires. It goes inside the box because if its >>>>>>>>> rating are exceeded it can blow a plug out of the case and spill hot >>>>>>>>> silica (sand). It's rated for 50,000 amps, and I've never heard of >>>>>>>>> one venting. The device I use is the LA-302R, which is about the >>>>>>>>> size of a 12oz drink can but only half as tall.
I got updates from Bob all along, but after a little more than a >>>>>>>>> year and several storms, he had sustained no further damage after >>>>>>>>> installation and declared it a success. I've used them since in two >>>>>>>>> other houses without any failures. I've also installed them for 2 >>>>>>>>> other people and have pointed others to them for themselves, and >>>>>>>>> have never heard of any damage afterwards. I believe in them. >>>>>>>>>
They have expanded their business and product offerings over the >>>>>>>>> years, and you can even buy some of it through Amazon. Their website >>>>>>>>> is:
<deltala.com> Some good info there.
Oh, and we bought a new house about 8 months ago, and I just hadn't >>>>>>>>> put one on this house yet. Lost the cable modem in a storm just a >>>>>>>>> while back. It it was the only piece of electronics not on a UPS at >>>>>>>>> the time. It is now, and a brand new LA-302R is sitting in the box >>>>>>>>> waiting to be installed tomorrow.
Hope this helps someone!
I have one of these installed:
https://www.se.com/us/en/product/HEPD80/surge-protection-device-hepd-80ka-120-240v-1-phase-3-wire-spd-type-1/
It's supposed to protect the AC and refrigerators but it doesn't work >>>>>>>> well for electronics. I've changed it out every three years even >>>>>>>> though the light was on.
We have a lot of power surges here. I have about nine UPS's and four >>>>>>>> of these:
https://www.amazon.com/gp/product/B0000512LA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
FPL has a device you can pay for monthly, with a guarantee, but I >>>>>>>> don't want to have to deal with a claim if something gets fried. >>>>>>>>
Something I learned from the high vacuum systems biz:
A lightening bolt is a current carrying discharge facilitated
by ionized gas in the atmosphere. The "bolt" is considered to be >>>>>>> both direct current however because it is full of high
frequency AC it is also a high energy RF discharge.
A typical round, heavy grounding wire becomes a coil to the
RF components in the discharge and sets up a characteristic
impedance to the current the wire is intended to ground.
A much better "ground" wire is a wide conductor like
copper flashing. It is much less likely to develop
a characteristic impedance to the RF components of the
lightening strike while still maintaining an excellent
conductor for the DC current components.
In the high vacuum deposition systems my company built
we used a subsystem called an electron beam power supply
that operated at 10K-12K volts DC. Often, any trapped
gases within the vacuum chamber or it's internal
components (usually residual water vapor) would become
ionized causing an arc discharge similar to lightening.
If not adequately grounded to earth, these arcs could
become severe enough to damage other components that
operated at low voltages like computers or PLC's.
Providing an effective grounding systems was tricky
sometimes. Over-grounding could set up ground loops
sometimes causing more damage than what they were
intended to prevent. Instead of using heavy copper
ground wire we used copper flashing to quench to
energy contained in these arcs. Worked well.
Hopefully I won't have a direct lightening strike. Our trees are much >>>>>> higher than the house and we have a concrete tile roof. I'm just trying
to protect my stuff from surges and brownouts.
All this discussion of grounds has me thinking of putting some sod
down out back and extending the yard a bit.
Water restrictions here, so people taking out lawns.
A neighbor couple houses down in Tampa ripped up his front yard and
put gravel down. Built a concrete platform, painted it green, and put
his lawn mower, also green, on the platform. Looked pretty damn good.
Years ago, was a gas station on Altamont pass, that had faux grass and a
lawnmower on it. Lawnmower lasted for years after the station was tore
down.
If it was an old Briggs, it probably would start with fresh gas.
Years ago, was a gas station on Altamont pass, that had faux grass and a >>> lawnmower on it. Lawnmower lasted for years after the station was tore >>> down.
If it was an old Briggs, it probably would start with fresh gas.
I think it was a push mower.
On Thu, 11 Aug 2022 21:38:23 -0000 (UTC), Bill <califbill9998remove8@gmail.com> wrote:
Years ago, was a gas station on Altamont pass, that had faux grass and a >>>> lawnmower on it. Lawnmower lasted for years after the station was tore >>>> down.
If it was an old Briggs, it probably would start with fresh gas.
I think it was a push mower.
Then a little WD-40, tune up the blades and it will be good to go.
This one still works.
https://gfretwell.com/ftp/Amish%20lawn%20tractor.jpg
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 371 |
| Nodes: | 16 (4 / 12) |
| Uptime: | 179:41:37 |
| Calls: | 7,918 |
| Calls today: | 3 |
| Files: | 12,986 |
| Messages: | 5,798,057 |
| Posted today: | 1 |
