Interesting. I've seen utility companies in my area install new wood poles that
had a coil of heavy copper wire stapled to the bottom of the pole before it was
installed in the hole. The wire then ran up the pole a bit so that it was above
ground level when the pole was installed. Don't know what, or how it was
connected after that.
73, Stew K3ND
________________________________
From: David Gilbert <xdavid@cis-broadband.com>
To: towertalk@contesting.com
Sent: Friday, July 19, 2013 12:41 AM
Subject: Re: [TowerTalk] Tower grounding
Yup.
Although I can't find it anymore, I swear I saw a diagram in a code book
that called for the 20 feet of copper wire to have a few wraps around
the rebar in the trench before the pour. Probably that was just to make
sure that the wire didn't get displaced (pushed to the bottom of the
trench) during the pour, but just in case I added some bronze pipe
clamps along the run to affix the wire to the rebar.
73,
Dave AB7E
On 7/18/2013 8:58 PM, Jim Lux wrote:
> On 7/18/13 12:43 PM, David Gilbert wrote:
>>
>> I didn't say it wasn't possible to do so. I said that the majority of
>> residential Ufer grounds in the footing bring the ground wire up to the
>> breaker panel from outside the footing.
>
> That's the way virtually all the ones here in Southern California are
> done, and it's done with a wire laid in the trench with the rebar
> before the pour. I'm going to guess that they don't do the clamp to
> rebar is because it takes more stuff to carry on the truck and
> probably takes longer AND it requires two different trades to work
> together.
>
> If the rebar guys do their work, and then later the electrical guy
> comes by and lays the wire in along side, it's just easier. They have
> a big old spool of the bare wire on the truck,
>
> The copper wire comes up through the concrete next to the conduits for
> the underground utilities and winds up inside the garage wall, most
> likely.
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