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Joined: Oct 2000
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The "electrician" decided to convert this 2" EMT LB into some type of 2" EMT LB LL 3/4!
Submitted by;
Scott Griffin Griffin Electric Co., Inc. Central New York
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Joined: Jan 2002
Posts: 1,457
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This used to be called "Yankee inginuity" now it is a violation.
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Joined: Aug 2002
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Extra service charge for a custom installation...
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Joined: Oct 2003
Posts: 147
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I have a question. Does the N.E.C allow splicing in LBs, can it be used as a general purpose junction box?
If yes, then I would call this "use of an LB as a juction box". This would bring up issues of internal box volume and maximum box fill. Removing the cover would probably reveal a code violation in these areas.
If No, then I would call this "modification of electrical equipment".(modifying a 2"LB to a 2"LB,LL3/4")
Does the N.E.C allow modification of electrical equipment without it being re-certified?
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Joined: Mar 2001
Posts: 333
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Crash, an LB(conduit body) can contain splices, but the body can't be modified. The conduit body cubic inch capacity must be marked by the manufacturer in order to splice in it.
Steve
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Joined: Aug 2002
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How would such a violation be corrected? I assume a special box is already sold for that type of configuration or a reducing connector? Or do you feed the fat pipe into a junction box first to tap into the thinner pipe and then from the box to the elbow? If not....how would you go about puting something like this together properly? Asking out of curiosity, not that I'm going to actually go out and do this for someone....
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Joined: Oct 2000
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Sven, i would imagine the conductors would need to be pulled out, and a proper JB installed
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Joined: Mar 2001
Posts: 333
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Sven, a conventional junction box could be used. A tee condulet could also be installed in the horizontal run and the EMT rerouted over to it.
steve
Steve
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Joined: Jul 2003
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What article of the NEC does that violate? We drill holes in other boxes, etc. If it doesn't overstuff the LB, it doesn't seem like a bad move to me...can somebody educate me on this one?
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Joined: Jan 2004
Posts: 91
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your violation is probably in the UL listing for the lb. you cannot modify its surface.
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Tom
Shinnston, WV USA
Posts: 1,044
Joined: January 2001
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