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  1. #11
    Join Date
    Aug 2007
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    The Great White North
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    4,045

    Default Re: Can you use 14/3 for 2 Circuits?

    I know you new that just had to remind you.

    The downside of the double pole for MWBC when the breakers are tripped then both the lighting and receptacles are dead ( if wired that way ) leaving no way of having light in that area.

    It's difficult to find clips around these parts -- me thinks it's more of a conspiracy between the manufacturers and suppliers to sell more breakers.
    Last edited by canuk; 07-19-2010 at 12:06 AM.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  2. #12
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,557

    Default Re: Can you use 14/3 for 2 Circuits?

    NEC requires labeling at the panel on MWBC breakers [NEC 210.5(C)], could be the single breakers with the clip meets that requirement.
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  3. #13
    Join Date
    Sep 2008
    Posts
    93

    Default Re: Can you use 14/3 for 2 Circuits?

    Well ran into a Master Electrician on a job site someone I had not seen in 5 years and asked him and here in Michigan you can not use neutrals or grounds from one / 14/3 to feed a second circuit. Guess someone got injured and they don't allow this at least here in Michigan.Last time I saw him he was a Journeyman. Never hurts to ask he being licensed to work here in Michigan.

    But thanks all the same I will have to help now repull this and get it done for for the friend... Just a little extra $$ but hope I can find the time...

    Appreciate the replies but never the same from state to state...

    MMeehan

  4. #14
    Join Date
    Oct 2010
    Posts
    1

    Default Re: Can you use 14/3 for 2 Circuits?

    Quote Originally Posted by MMeehan View Post
    Thanks these circuits are for general shop lighting and a couple of plugs for plug in transformers. He just wanted to be sure they were okay.

    The AFCI and the GFCI are for places like bedrooms, kitchens and bathrooms. But I will mention it in case he has to change something around it would be best to run a 14/2 from the E panel to these kind of locations...

    Appreciate the info,

    MMeehan
    You do not use a double poll breaker, you use two single pole breakers with a mechanical clip so if one is turned off the other is also. That prevents some one from getting electrocuted if they are working on only one circuit. The breakers are normally installed one above the other so they are each on a different leg. If you check voltage between black or red to neutral you get 120 volts if you check voltage between red and black you would read 240 volts. The mechanical clip makes you turn both breakers off when servicing so you can't get feed back from the other circuit. Hope that clears it up a little.

  5. #15
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Can you use 14/3 for 2 Circuits?

    Quote Originally Posted by daviddwilson View Post
    You do not use a double poll breaker, you use two single pole breakers with a mechanical clip so if one is turned off the other is also. That prevents some one from getting electrocuted if they are working on only one circuit. The breakers are normally installed one above the other so they are each on a different leg. If you check voltage between black or red to neutral you get 120 volts if you check voltage between red and black you would read 240 volts. The mechanical clip makes you turn both breakers off when servicing so you can't get feed back from the other circuit. Hope that clears it up a little.
    Hmmm --- so how does that differ from double pole common trip breakers ?
    "" an ounce of perception -- a pound of obscure "
    - Rush

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