Re: [TCML] comments on designing a lightning protection system

["Mike H" <mike8675309@xxxxxxxxx>]

On Sun, Jun 8, 2008 at 9:19 PM,  <FIFTYGUY@xxxxxxx> wrote:

...
>    BTW, galvanized steel pipes are in general pretty  good conductors of
> most kinds of electricity. What's the *best* possible  conductor to use to
> channel lightning? Heavywall large-diameter silver pipes  braided into a Litz cable?
>
> -Phil LaBudde

the best possible conductor is one sized to carry the load while able
to provide a low impedance path to the ground point.

>From a canadian source here is one example:
http://www.iaei.org/subscriber/magazine/00_c/canadian_code.htm

In general, lightning protection systems grounding is done using
copper or aluminum cables and ground rods, 1/2 inch copper or
copper-clad steel, 5/8 inch galvanized steel or copper plates. Rods
should be spaced to allow down conductors to be run down a building to
the ground electrode as directly as possible. A metallic underground
water system may be used for both electrical and lightning protection
grounding. The lightning protection grounding should always be
interconnected with a metallic water system if available outside the
building.

Lots of info here on grounding done for a 911 center in Florida.
http://www.copper.org/applications/electrical/pq/casestudy/florida911.html

Interesting look at grounding from a HAM perspective.
http://www.astrosurf.com/luxorion/qsl-lightning-protection.htm
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