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"Richard Fry" Still, a good earth ground and other means are desirable to protect your equipment from lightning transients... Any 'Theory of Lightning' needs to be capable of including airplanes and their general success at lightning protection - obviously sans earth grounding. Typical airplanes get hits several times per year - often with no damage. 'Airplanes' is such an obvious one-word counter example to sooooooo many arguments about the "necessity" (sic) earth grounding... I'm glad you used the words "...and other means" and "desirable". You're not guilty. Personally, I believe that a Faraday Cage (with appropriate entrance protection) would be far more effective than fiddling with (optional) earth grounds. Since most commercial buildings are metal or equivalent, this gives the 'lightning professional' a huge advantage over the amateur (in his wooden house). Much of what works for 'professional' lightning protection works ~because~ the commercial installation is in a metal building. This point needs to be acknowledged by those professing their experience while advising the amateur in his wooden house full of lengthy, low voltage signal wires. Having 20,000 amps surging (uh oh - 'surge' - that'll trigger off the 'w_tom' idiobot - sorry) down the ground wire is obviously going to cause 'sparks' in adjacent wires and cables and 'minor' equipment damage - even with a perfect earth ground. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** http://www.usenet.com Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncensored -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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