I assume you mean the top end of the copper clad steel ground rod
shouldn't be embedded in the concrete, and that is true. But if he
buries the Cadweld joint (wire to ground rod) in the dirt below the
bottom of the hole, with only the copper wire entering the concrete, I
can't see where there would be an issue (discounting the urban legends
about exploding concrete, of course). Ufer grounds for house
foundations have the copper wire exit the concrete below grade all of
the time without worry about corrosion.
73,
Dave AB7E
Gary Schafer wrote:
> You don't want anything sticking out of the concrete below grade. It will
> corrode and work its way into the concrete.
>
> 73
> Gary K4FMX
>
>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com [mailto:towertalk-
>> bounces@contesting.com] On Behalf Of W7CE
>> Sent: Thursday, September 13, 2007 10:43 AM
>> To: towertalk@contesting.com
>> Subject: [TowerTalk] Ufer ground using copper wire
>>
>> I'm planning on an Ufer ground in my new tower base. I've seen several
>> sites recommending 20' or more of #2 or larger copper wire wrapped around
>> the outside of the rebar cage. Are there any chemical reactions that make
>> using copper a bad idea? I seem to recall reading something about that a
>> while back, but now I can't find any mention of it.
>>
>> If copper is ok, I'm thinking about putting a pounding a copper ground rod
>> into the bottom of the foundation hole. The copper wire will be attached
>> to
>> it and then wrap around the rebar cage and come out the top of the pad.
>> Comments or suggestions anyone?
>>
>> 73,
>> Clay W7CE
>>
>>
>> _______________________________________________
>>
>>
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>
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