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Multiwire Branch Circuit
#93585
06/01/05 08:44 PM
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Joined: Jan 2004
Posts: 1,507
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Can I run a multiwire branch circuit to a garage consisting of a #14 and a #12 ungrounded conductor and a # 12 grounded conductor?
George Little
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Re: Multiwire Branch Circuit
#93586
06/01/05 11:01 PM
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Joined: Feb 2003
Posts: 687
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Sometimes multi wire circuits are run in mixed wire/breaker sizes around here. One example would be a bathroom. The #14 for lighting and #12 for GFI. Myself I try to keep equipment off of lighting. I'm sure some would not like this multi wire set-up. Maybe someone could figure the math on this with extreme conditions. I doubt it would make much differance doing it this way. Never had a complaint or seen a problem. I try to tape the network together and put the breakers next to each other to avoid confusion for someone elce but thats just my thing.
Tom
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Re: Multiwire Branch Circuit
#93587
06/01/05 11:37 PM
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Joined: Mar 2005
Posts: 212
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Active, are you talking about NM? Where does one get such stuff?
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Re: Multiwire Branch Circuit
#93588
06/01/05 11:39 PM
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Joined: May 2003
Posts: 2,876
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Don't see why not... At least if neutral is not the #14.
Is this a seperate building?
Mark Heller "Well - I oughta....." -Jackie Gleason
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Re: Multiwire Branch Circuit
#93589
06/02/05 01:00 AM
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Joined: Feb 2003
Posts: 687
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Not NM. I'm allways talking pipe. Don't see much MN except code corections or some use it for UF. If I had to do a whole building with MN I would look like a Moe because not much experiance with it.
Tom
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Re: Multiwire Branch Circuit
#93590
06/02/05 04:48 AM
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Joined: Jan 2003
Posts: 4,391
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I have run a mixed size multiwire circuit before. I see no problem with it. We remodeled a small kitchen in a office building. They had a removed a stove fed with 6/3 AC cable. I used one side of the 6/3 to feed a 30 amp 120 volt water heater and the other side to feed 120 volt 20 amp outlets. No worries about voltage drop. ![[Linked Image]](https://www.electrical-contractor.net/ubb/wink.gif)
Bob Badger Construction & Maintenance Electrician Massachusetts
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Re: Multiwire Branch Circuit
#93591
06/02/05 09:12 PM
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Joined: Jan 2002
Posts: 1,457
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You certainly can do this. Wait. Is this a trick question? Define garage. ![[Linked Image]](https://www.electrical-contractor.net/ubb/biggrin.gif) [This message has been edited by Electricmanscott (edited 06-02-2005).]
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Re: Multiwire Branch Circuit
#93592
06/02/05 09:43 PM
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Joined: Jan 2004
Posts: 1,507
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No trick question. Just never did that trick before. Can't see any hazard and the reason he wanted to do it was so he can put the plugs on a 20a. circuit and the lights on a 15a. circuit. I couldn't find anything in the code that prohibited it. Thought you code aficionados knew of an article in the book that would apply. As for the definition of garage:
GARAGE n 1: an outbuilding (or part of a building) for housing automobiles 2: a repair shop where cars and trucks are serviced and repaired [syn: service department] v : keep or store in a garage; "we don't garage our car"
Source: WordNet ® 2.0, © 2003 Princeton University
[This message has been edited by George Little (edited 06-02-2005).]
George Little
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Re: Multiwire Branch Circuit
#93593
06/02/05 09:47 PM
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Joined: Dec 2004
Posts: 209
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George, Can we assume that this is an "attached" garage?
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Re: Multiwire Branch Circuit
#93594
06/02/05 09:49 PM
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Joined: Jan 2004
Posts: 1,507
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Detached Garage - I forgot to mention that.
George Little
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