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Old 06-26-2009, 03:15 PM   #1
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Lightning vs CEE off-the-wall question.


After seeing the massive destruction that a lightning bolt can do the thought (question really) popped into my mind of what happens when lightning strikes the electrical system of a house using the rebar in the footing as the ground (concrete encase electrode).

Has anyone ever heard of a lighting strike cracking the footing of a house using a CEE (maybe no one knows cause it's hidden from view).

Similar question - should lightning rods on a house be grounded to the same CEE as the houses electrical system or separate ground rods?

Odd questions I guess but it's Friday.

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Old 07-18-2009, 09:15 AM   #2
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Lightning vs CEE off-the-wall question.


i would use ground rods .your trying to send the lightning to the ground not your panel its just safer with ground rods

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Old 07-19-2009, 11:06 AM   #3
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Lightning vs CEE off-the-wall question.


Quote:
Originally Posted by jogr View Post
After seeing the massive destruction that a lightning bolt can do the thought (question really) popped into my mind of what happens when lightning strikes the electrical system of a house using the rebar in the footing as the ground (concrete encase electrode).

Has anyone ever heard of a lighting strike cracking the footing of a house using a CEE (maybe no one knows cause it's hidden from view).

I have a master electrician friend who's seen a slab blown to pieces by lightning getting into the rebar. He is definitely not a fan of that particular code requirement.
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