Quote:
Originally Posted by eremite06
How do those 12 homeowners with lightning protection know they took a direct hit? With 100 million volts hitting that ground wire, I'm sure it would melt the wire as well as singe the surrounding area. That's damage, right?
I've seen large oak trees that have been hit and it splits them right down the middle with a large visible black singe.
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In one case the homeowner, a retired electrical engineer who had the foresight to install a LPS, was in his living room looking out through his pool cage during a thunderstorm. Lightning struck one of the points on the pool cage and jumped to another point and then went to ground as designed without any damage. In another case the event was reported by a retired meteorologist who took a direct strike and another case was a retired firefighter, fortunately both also had the foresight to install a LPS to NFPA-780 by a UL listed installer. I highly recommend that you read Dr. Martin Uman’s book, The Art and Science of Lightning Protection and especially read the first paragraph of the preface.