[TowerTalk] update: grounding questions: Ufer, strap, exothermic welds
Mat Eshpeter
kk1c at live.com
Mon Apr 18 18:33:51 PDT 2011
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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