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1 members (Scott35),
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Joined: Oct 2005
Posts: 4
Junior Member
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I stand corrected (and learned something in the process), the Erico acorn clamp is listed for use on groundrods AND rebar with a wire size of #2 or 1/0 depending on the part number. Jake
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Joined: May 2003
Posts: 2,876
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Yes Scott a 3930 or two would be just the bees knees.
Mark Heller "Well - I oughta....." -Jackie Gleason
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Joined: Mar 2005
Posts: 399
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From what I could tell the 3930 is for conduit, i.e. rigid. The JP- connectors, above the 3930 in the catalogue, are listed for use with EMT but, it has a maximum wire size of # 6. Alan--
Alan-- If it was easy, anyone could do it.
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Joined: Oct 2005
Posts: 100
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Surfinsparky - Pulling an insulated wire won't solve the problem were local code requires BX, MC or conduit; they want the GEC to have the same physical protection.
A friend of mine who doesn't do much work in NYC got red tagged on 200A residential service upgrade for using an insulated #4 for the GEC. BS, I know. Does it all the time outside NYC and never had a problem, always passed, but in NYC the GEC had to be in raceway (conduit) and of course, bonded at both ends.
Roger - You're absolutely correct on the "choke" effect of poor or non-existent bonding of a metal raceway for the GEC. Excellent point.
Joe
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Joined: May 2003
Posts: 2,876
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In NYC or any other big city the larger the copper, the more temping it is to be physicaly damged while being stolen. The conduit is there to help hide it...
Where I'm at in SF, it depends on what neighborhood you're in, and general mood of the inspector. But the safe side is to just pipe it if accessable to the public in anyway. Not behind locked door or gate.... People do snip and steal them...
[This message has been edited by e57 (edited 10-07-2006).]
Mark Heller "Well - I oughta....." -Jackie Gleason
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Posts: 43
Joined: September 2013
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