--soap box on--
I looked at the web site and it scares me, there is no technical
information there.
the strategic plan and other documentation show that they are a group
trying to take over lightning protection. they will be the only ones
to design and or certify a protection system or product. you will
have to go to them, become a member, to get technical information,
training or certification. JMHO
--soap box off--
At 08:07 PM 7/29/2009, N4NW wrote:
>You might want to visit The Lightning Protection Institute for
>answers to your questions.
>
>http://www.lightning.org/
>
>
>73's
>Tom - N4NW
>
>At 02:40 PM 7/29/2009, you wrote:
> >Last weekend a house in my father-in-laws subdivision was hit by
> >lightning and was totaled even though 4 fire stations were on the scene.
> >
> >None of the houses around have lightning rods and HOA & CCR prohibits
> >antenna towers.
> >
> >He thinks that the practice of running the gas line in the attic is a
> >big contributor to the house fires from lightning. He says the lightning
> >goes through the roof, or through the metal chimney and hits the black
> >galvanized gas pipe and blows off a cap and ignites. Even with flow
> >valves that are supposed to shut down if there is unrestricted flow, gas
> >leaks out and helps fuel the fire.
> >
> >If we put lightning rods on the house, will that prevent the lightning
> >from jumping to the gas line in the attic? Or will it jump anyway. He
> >thinks it will jump anyway so it does not matter if there are lightning
> >rods or not.
> >
> >You folks know more about lightning and lightning protection than I do,
> >so I am looking for some advice.
> >
> >How big should the wire be from the lightning rod to the ground?
> >
> >I assume all lightning rods should be tied together, and multiple paths
> >(2 or 3) from the roof to the ground are preferred to split up the
> >current.
> >
> >Should the lightning rods be coupled to the house electrical service
> >panel ground also, like with antennas, or should it be kept separate
> >because it is not attached to equipment?
> >
> >Should the gas pipe at the ground level be tied to the lightning rod
> >grounding rods? My thought is that if it is not then there is a big
> >potential difference between the lightning rod and the gas line which
> >creates a bigger voltage difference for the lightning to jump in the
> >attic. If it is attached together where the pipe comes out of the ground
> >then the gas pipe will have a charge which makes the difference between
> >the lightning rods and the gas pipe less so there is not as much
> >difference for the energy to jump from one to the other. Is this logic
> >sound or nonsense?
> >
> >This is in North Texas, north of Dallas. We get some pretty good
> >thunderstorms here.
> >--
> >
> >
> >Kipton Moravec AE5IB .- . ..... .. -...
> >==============================================
> >Four Way Test
> >Is it the Truth?
> >Is it Fair to all concerned?
> >Will it build Goodwill and Better Friendships?
> >Will it be Beneficial to all concerned?
> >- Herbert J Taylor (1932)
> >
> >
> >
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> >
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> >
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>
>Tom Gregory, N4NW
>n4nw@n4nw.org
>
>N4NW LLC - Complete Merchant Services
>
>Check out local N4NW weather conditions real-time -->> http://www.n4nw.org
>
>
>
>
>
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