I wonder why no one has come up with a clamp that uses a bolt that tightens a
spring, so there is constant tension on the clamp, just like exhaust manifold
to collector pipe bolts? Guess I need to get to work on that...
Chris
KF7P
On May 5, 2013, at 13:11 , Gene Smar wrote:
Patrick:
I would not bury a mechanical ground clamp. It can't easily be checked and
retightened each year. I would use a longer ground rod and leave six inches or
so above ground and apply the clamp there. A welded connection such as Cadweld
can be buried and forgotten. My 132 feet or so of #2 solid ground wire is
attached to 12 copper ground rods with that method.
73 de
Gene Smar AD3F
----- Original Message ----- From: "Patrick Greenlee" <patrick_g@windstream.net>
To: <TOWERTALK@contesting.com>
Sent: Sunday, May 05, 2013 2:59 PM
Subject: Re: [TowerTalk] Grounding HDX-555
> While on the grounding topic... why do some sources recommend burying the
> wire clamp to copper ground rod connection a minimum of 6 inches?
>
> Patrick AF5CK
>
> -----Original Message----- From: Alan NV8A
> Sent: Sunday, May 05, 2013 1:39 PM
> To: TOWERTALK@contesting.com
> Cc: Brad Hyde
> Subject: Re: [TowerTalk] Grounding HDX-555
>
> On 05/05/13 12:19 pm, Brad Hyde wrote:
>
>> I am in the process of erecting an HDX-555. I have the hole dug and most of
>> the rebar cage built. My question is about the best method of grounding.
>> Should I place a copper cable at the bottom of the hole and then attach it
>> to the tower? This method would have the cable immersed in the concrete
>> which makes me wonder about that much heat going into the concrete if
>> lightning hits, even if it is just on the edge of the concrete. The other
>> method I am thinking of would be three ground rods placed around the tower
>> and connected together and to the tower with copper strap and/or very heavy
>> copper wire. Just looking for input from the collective knowledge of this
>> group as I am in a lightning prone area in west Texas. Thanks.
>
> I have #4 copper connected to each leg of my HDX-555 (with
> stainless-steel shims as separators to avoid corrosion), and each
> running to an 8ft. copper-clad ground rod about 10ft. away.
>
> 73
>
> Alan NV8A
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