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#115558 11/11/03 09:32 PM
Joined: Oct 2000
Posts: 3,682
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[Linked Image]
Quote
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

#115559 11/12/03 07:17 AM
Joined: Jan 2002
Posts: 1,457
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This used to be called "Yankee inginuity" now it is a violation.

#115560 11/12/03 09:32 AM
Joined: Aug 2002
Posts: 1,081
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Extra service charge for a custom installation...

#115561 11/12/03 07:33 PM
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?

#115562 11/12/03 08:18 PM
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
#115563 11/12/03 08:50 PM
Joined: Aug 2002
Posts: 1,691
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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? [Linked Image]

Asking out of curiosity, not that I'm going to actually go out and do this for someone.... [Linked Image]

#115564 11/12/03 09:11 PM
Joined: Oct 2000
Posts: 5,392
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Sven,
i would imagine the conductors would need to be pulled out, and a proper JB installed

#115565 11/12/03 09:11 PM
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
#115566 11/27/03 12:05 AM
Joined: Jul 2003
Posts: 141
S
Member
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?

#115567 01/07/04 05:27 PM
Joined: Jan 2004
Posts: 91
R
Member
your violation is probably in the UL listing
for the lb. you cannot modify its surface.


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