[TowerTalk] update: grounding questions: Ufer, strap, exothermic welds

[Jim W7RY]

Not 2/0 AWG  (two ought) #2AWG tinned solid copper.  Big difference!

73
Jim W7RY


--------------------------------------------------
From: "Mat Eshpeter" <kk1c at live.com>
Sent: Monday, April 18, 2011 6:33 PM
To: <towertalk at contesting.com>
Subject: [TowerTalk] update:  grounding questions: Ufer, strap, exothermic 
welds

>
> An update on this thread and a new question or two:
>
> Seems to be pretty well agreed that connecting the rebar to the tower and 
> radials is a good thing. The potential damage to concrete is attributed to 
> poor installation technique.
>
> I am confused about the preference for copper wire over strap for use as a 
> buried ground radial to interconnect ground rods, given the much lower 
> inductance of strap; it may be that the longevity of a big piece of buried 
> wire outweighs the lower inductance benefit of comparatively thinner 
> buried strap?
>
> I called a couple of electrical supply shops today. They seem to be in 
> disbelief that anyone would use solid 2/0 copper wire for anything; one 
> guy claimed I would only be able to bend this size solid wire with the 
> same equipment used to bend conduit or pipe. Does anyone actually use 2/0 
> solid copper for grounding? If so, what is your experience regarding 
> bending / handling this wire?
>
> I have delayed my tower base pour for another week while I figure out the 
> final details of my ground strategy. I do appreciate the help offered by 
> all those that have taken the time to respond to this thread.
>
> 73,
> Mat
> KK1C
>
>
>
>
>
>
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