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Joined: Dec 2000
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I discovered this one during a bath remodel. Under the lavatory, buried in the wall- The conductor was spliced with a barrel crimp to 4 conductors above the ceiling, and the 4 wires were attached to the boxes in this fashion- The branch circuit was supplied by this NM cable, containing a #16 ground wire, which was connected in the usual manner at the panel- What do ya' think? [This message has been edited by electure (edited 06-03-2005).]
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Joined: Feb 2005
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Homestly, I think it's one of the better-done retro-grounding jobs I've seen. At least the nut and bolt were used for no ther purpose.
Larry Fine Fine Electric Co. fineelectricco.com
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Joined: Mar 2001
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The ground strap is very common(original to the house)in the Bay Area, but I've only seen the reduced ground NM a couple of times.
steve
Steve
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Joined: Nov 2001
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That's not a PLASTIC pipe in that first pic, is it? Mike (mamills)
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Joined: Feb 2002
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Looks like 1/2" copper to me... /mike
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Joined: Dec 2000
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Yes, it's 1/2" copper, and cast iron drain with really-by-golly lead and oakum joints.
This house was custom built in 1958. This is original as installed.
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Joined: Sep 2004
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Hey Dude!!! What were you doing in my house???? My place was done pretty much the same way. See here https://www.electrical-contractor.net/ubb/Forum5/HTML/000871.html The ground was attached by the same type of clamp to the local water line in the bathroom and then around the nail for the box.
Larry LeVoir Inspector City of Irvine, CA
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Joined: Jul 2002
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I'd be interested to see how connections like this would actually carry the high fault current that they are supposed to. What sort of filler is that, in that piece of NM cable?. It looks like it would burn pretty readily.
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Joined: May 2003
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Wasn't the cold water allowed to be used as a GEC/EGC up until prior to '93 NEC? When did the 5' rule come up for point of connection to water? It was the way it was done for a while, not sure when that 'while' was though. It seems 40's- 60's.
Trumpy, that filler is craft paper, still used in romex, and other cables.
Mark Heller "Well - I oughta....." -Jackie Gleason
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Joined: Mar 2005
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I remember dad using that cast-iron pipe. To seal it they rammed tow (oakum) and boss-white, (a mix of powdered chalk and linseed oil), in the annulus, followed by lead-wool hammered in with a wooden spoke. Another American pipe used in the UK at that time (late forties) was made of paper-pulp and molten tar,(made in a vacuum), with the ends taper machined. It was brilliant- light, strong & supple with foolproof joints- just hammered together with a dolly. Then upvc arrived. Alan
Wood work but can't!
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