I think you will find that almost all grounding systems used by Army
Ordnance to protect explosives storage bunkers use a heavy Copper Braid. I
know that all I have seen were. It is not a flat braid; it is a wover,
round material.
Bill-W4BSG
At 10:23 AM 7/9/2006 -0400, donovanf@starpower.net wrote:
>Mike,
>
>Don't do it!
>
>Braid is a terrible choice for lightning or RF grounding, and its
>much worse outdoors where corrosion will be a factor. You
>won't find a single knowledgeable source who would ever
>recommend braid for lightning protection outdoors.
>
>Your best choice is solid copper wire. Tinned 2 AWG solid
>copper is the "gold standard."
>
>73!
>Frank
>W3LPL
>
>---- Original message ----
> >Date: Sun, 9 Jul 2006 06:21:20 -0400
> >From: "Dr M J DiGirolamo" <DrD@2020.com>
> >Subject: [TowerTalk] Cadwelding vs Silver Solder for Ground
>Radial Systems
> >To: <towertalk@contesting.com>
> >
> >Dear TT Colleagues,
> >
> > There has been so much discussion here about dealing with
>lightning
> >protection and grounding systems that I can't remember
>whether I read about the
> >following topic or not.
> >
> > I'm planning a ground radial system for each tower leg
>(yes, a peripheral
> >ground system and single point ground, etc too) and have
>decided to use a heavy
> >braided tinned copper cable as the radial for each of these
>legs. I have just
> >about ruled out copper ribbon for various reasons. Ground
>rods will be 6' or 8'
> >deep set on 12' or 16' centers.
> >
> > Question is: Cadwelding is VERY EXPENSIVE when used to
>attach the radials to
> >the ground rods! Can anyone comment on whether there will
>be sufficient
> >bonding and heat protection if a heavy silver solder bond is
>made in place of
> >the cadweld. I realize that cadwelding forms a molecular
>bond but it's just so
> >darn expensive.
> >
> >73,
> >
> >Mike DiGirolamo, W4XN
> >Charlottesville, VA
> >W4XN@arrl.net
>_______________________________________________
>
>
>
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Bill Aycock - W4BSG
Woodville, Alabama
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