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Re: [TCML] comments on designing a lightning protection system
It is not proper practice to use a handrail for a ground period.
Would you like to see your house or factory main wiring ground use a
handrail as the system ground? IE, the ground comes out of your main
breaker panel and connects to the handrail.
1) A handrail is not necessarily connected to any metal underneath
the concrete or other material it is mounted to.
2) A handrail is comprised of jointed sections that are not designed
to be electrical connections. If it were a true ground, every
connection would have to be either strapped or soldered. Cold
connections are not allowed. Even if the handrail was grounded, it is
not a good, reliable conductor.
3) A handrail is usually galvanized steel pipe, not a good conductor
4) If you want a lightning rod, you want only that grounded. A smooth
round surface such as a hand rail will actually build a charge and be
a potential attractor for lightning. Simple electrostatics are in play.
5) Proper systems have to have measured and tested grounds. A
professional would have this documented for the record of installation.
6) There is a lot of info on the web, I found this simple article
that clearly shows, this "professional" did not know what he was
It state materials and practices acceptable. The picture given show a
few "don'ts" indicating the
"professional" has no understanding of a proper installation.
A simple question, would you use a metal handrail for the ground on
your Tesla coil? From previous comments, I think I know the answer.
At 08:59 PM 6/5/2008 -0700, you wrote:
Question for you, Frank:
Did the "professional" ground the hand rail and the lightning rod (and
maybe other pieces of equipment?), or did he use just the hand rail as the
ground? There is a big difference.
> [Original Message]
> From: Frank <fxrays@xxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Date: 6/5/2008 6:04:34 PM
> Subject: Re: [TCML] comments on designing a lightning protection system
> Quacks in every profession!
> Not only totally wrong but so dangerous it is amazing!
> At 03:15 PM 6/5/2008 -0700, you wrote:
> >Here's what a "professional" did on my last project. This is not a
> >gag photo. The lightning rod was really tied directly to a handrail.
> >Of course if you're holding onto this handrail, proper grounding
> >wouldn't really matter much.
> >--- On Thu, 6/5/08, Jon Busack <boo1062@xxxxxxxxx> wrote:
> > > Please have a professional do your lightning protection
> > > system design and
> > > installation. It's more complicated than it seems.
> >Tesla mailing list
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