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Re: [TowerTalk] height of ground rod at tower base

To: Jim Thomson <jim.thom@telus.net>
Subject: Re: [TowerTalk] height of ground rod at tower base
From: Matt <lovewell@gmail.com>
Date: Tue, 24 Oct 2017 08:29:51 -0500
List-post: <mailto:towertalk@contesting.com>
Look a lot like the Harger clamps I've used.

https://www.tessco.com/products/displayProductInfo.do?sku=451339

They're $17.71 at tessco.  I always ground using #2 solid and it fit just
fine.

On Tue, Oct 24, 2017 at 8:21 AM, Jim Thomson <jim.thom@telus.net> wrote:

> Date: Mon, 23 Oct 2017 21:31:10 -0700
> From: Jim Brown <jim@audiosystemsgroup.com>
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] height of ground rod at tower base
>
> <Jeff,
>
> I know this is not answering your question, but six of the tower leg
> ground connectors that N0AX suggested here last week showed up today.
> Beautifully constructed, very robust, very easy to install. The
> connector U-bolts to the tower leg. Copper goes to a hunk of brass. The
> wire connector can accept copper strap and/or a wide range of copper
> wire sizes. There are two indentations for wire. This makes it easy to
> connect copper strap from the pour and up to two copper wires from rods
> to each leg, so it's a great splice point for the strap to the rods. An
> inspector can't help but be impressed!
>
> https://www.cableandwireshop.com/rohn-r-cpc1-125-tower-
> base-ground-clamp.html
>
> 73, Jim K9YC
>
> ##  How big a gauge of cu wire can you stuff into those rohn tower leg
> ground
> connectors ???    It does not specify on the url u posted.    You want to
> be able
> to stuff at least 2 gauge cu, if stranded cu used.   Cu strap  will also
> work, provided
> its thick enough.  If thin strap used, it could be doubled up, or even
> tripled  in thickness.
> If strap is too thin, its prone to being easily damaged.  Nobody ever
> damaged 2 gauge wire.
>
> ##  Note to Jeff.  8 ft copper clad ground rods with the point on the
> bottom end are installed
> with a rental, electric jack hammer. They make a fitting for the end of
> the jack hammer, that is
> a hollow, thick walled steel tube.... made for pounding in 8 ft ground
> rods. its ID is just big enough
> to handle the typ 1 inch OD of the grnd rod.   I needed help with that
> part.   8 or 10 ft step ladder used,
> with rod sticking out of the ground almost the full length.  1st the dirt
> was excavated around where the
> rods  were to be hammered in.  Then pointy end inserted and one fellow up
> on top of ladder with
> the jack hammer.  Helper on ground keeps the rod straight.    Hit the
> switch, and the rods goes into the
> ground like butter.   Once in a bunch, the jack hammer is handed off to
> the helper on the ground,
> who finishes driving it in...such that top of rod is recessed several
> inches below ground.    Do all
> 3 rods.... then start the cadwelding process, after ensuring tops of all
> rods are free of gunk, dirt etc.
>
> Jim   VE7RF
>
> Jim   VE7RF
>
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