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Posted by James \"Cubby\" Culbertson on July 5, 2006, 11:01 pm
Hiya,
My sister recently had a bolt of lightning hit very near to her house. She
lost a number of electronic appliances as a result. My initial thought is
that she may not have a good ground for her house. I'm wondering if there
is a way to test it or is it mostly just a visual thing? As well, are whole
house surge protectors good for this type of application? I suspect not but
thought I'd ask. I'm in a high lightning area (2nd highest number in this
state, FL is no. 1) and really don't have any trees nearby so I'm beginning
to think maybe a separate ground system just for lightning protection might
make sense. Obviously I'd locate the ground rod as far away from the house
ground but I'm wondering if this makes sense?
Cheers,
cc
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Posted by on July 5, 2006, 11:58 pm
On Wed, 5 Jul 2006 21:01:33 -0600, "James \"Cubby\" Culbertson"
>Hiya,
>My sister recently had a bolt of lightning hit very near to her house. She
>lost a number of electronic appliances as a result. My initial thought is
>that she may not have a good ground for her house. I'm wondering if there
>is a way to test it or is it mostly just a visual thing? As well, are whole
>house surge protectors good for this type of application? I suspect not but
>thought I'd ask. I'm in a high lightning area (2nd highest number in this
>state, FL is no. 1) and really don't have any trees nearby so I'm beginning
>to think maybe a separate ground system just for lightning protection might
>make sense. Obviously I'd locate the ground rod as far away from the house
>ground but I'm wondering if this makes sense?
>Cheers,
>cc
>
Surges that blow up electronics will not be stopped by a lightning rod
system.
The first thiung you have to do is fix your house grounding system.
Make sure you have a solid ground electrode system. That will be metal
water piping, within 5 feet of entering the house, supplimented with
at least one ground rod or other electrode.
This gets connected to your power panel grounding bus (although it may
really land in the meter). The next thing you have to do is be sure
the telaphone and cable company is bonded to your ground electrode
system,
They should have protectors in their Dmark and you should have a whole
house protector in your panel. If you are really in a lightning area I
would also advise point of use protectors at your TV, Computer and
whatever else you want to keep, particularly the stuff with more than
one cable going into it. Make sure your point of use protector catches
all of those cables (TV, phone and power).
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Posted by m Ransley on July 6, 2006, 7:00 am
As ghetwell said you should go over everything, even test outlets to be
sure they are wired properly. After I was hit a few times and loosing
tens of thousands in electronics I put in a panel Lightning arrestor,
panel surge protector, and individual outlet supressors. But dont buy
the cheap HD stuff, there are ratings on their worth, such as nanosecond
clamping time and product warrantys on lightning protection. Look at
Trip Light, they have good products that work quick, absorbe a fair
amount and have a lightning warranty. But no matter what you do
lightning can bypass all but the best commercial equipment set ups, even
the air charge can blow out equipment. Your best habit is unplugging
what is sensitive or have a switched outlet on specific areas you want
to protect and use surge protection
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Posted by hallerb@aol.com on July 6, 2006, 8:11 am
main house ground MUST be bonded to lightning arrestor ground, the kind
that has wire on top of home to dissapate strikes. install main service
panel surge protection for sure, those cheap terminal strips are just
that cheap wanabee junk.
if you have anything really sensitive plug into UPS, some come with a
complete warranty to cover anything that gets zapped.
no matrtewr what you do lightning will fry stuff if the hit is close
enough.
make certain cable, satellite, phone, power panel, and everything else
are firmly tied together.
otherwise a close hit can kill! by disimmiar ground voltages
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Posted by Member, Takoma Park Volunteer on July 7, 2006, 10:23 pm
hallerb@aol.com wrote:
> main house ground MUST be bonded to lightning arrestor ground, the kind
> that has wire on top of home to dissapate strikes. install main service
> panel surge protection for sure, those cheap terminal strips are just
> that cheap wanabee junk.
>
> if you have anything really sensitive plug into UPS, some come with a
> complete warranty to cover anything that gets zapped.
>
> no matrtewr what you do lightning will fry stuff if the hit is close
> enough.
>
> make certain cable, satellite, phone, power panel, and everything else
> are firmly tied together.
>
> otherwise a close hit can kill! by disimmiar ground voltages
>
I built radio equipment shelters for two years. Our shelters were
struck many times without any damage to the equipment inside. Lightning
damage is not inevitable. You just have to be willing to invest the
effort to install effective protection.
--
Tom Horne
"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison
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