Where does this stuff come from???

Posted by KEB on April 05, 2007 at 19:46:36 from (72.19.170.5):

In Reply to: O/T Question - What are the purpose of lightning r posted by Turke Bros. Farms on April 05, 2007 at 07:16:00:

Me again. Never ceases to amaze me how all this misinformation & these old wives tales continue to be propagated. Here's a couple places on the web that I know have some credibility when it comes to things like lightning. LTI is one of the foremost lightning protection and design companies in the world, to the point that they wrote the FAA's manual for protecting aircraft against the effects of lighting.

http://www.lightningtech.com/f_sets/faq.html

Here's a link to a paper giving some background on lightning protection and the history of the technology.

http://www.lightningsafety.com/nlsi_info/brief_history.html

As I stated before, the sole purpose of a lightning rod is to guide the lightning current to ground via a "safe" path. The rod MUST be grounded in order to work, otherwise you'll end up with side flashes to who knows where on the structure. Note also that the lightning rod/ground wire does not have to survive the strike to do its job. Once the path is established, the current will continue to flow in the ionized channel even after the wire vaporizes. Obviously, you have to replace the system after this happens.

I don't want to come across as arrogant, but I'd sure like to see some reputable references providing data to support some of the mis-information being banted about here. If you can't back your statement up with references or data, then its nothing more than an opinion.

Keith

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