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Thread: Breaker wiring

  1. #1
    Join Date
    Dec 2007
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    Default Breaker wiring

    I found a circuit wired today that I don't know if it is safe. They had used an old double pole, 240 V, 30 amp breaker and used it to wire a 120 V circuit by using one screw of 30 Amp breaker. Is this ok?

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    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  2. #2
    Fred Warner's Avatar
    Fred Warner Guest

    Default Re: Breaker wiring

    Was the conductor that was terminated on the 30 ampere breaker a #10 gage copper conductor?


  3. #3
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    Default Re: Breaker wiring

    No, I wrote up the wire was undersized but didn't know about the rest.

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  4. #4
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    Default Re: Breaker wiring

    It's not inherently illegal, but I agree about the 30A used as a single pole.

    I can think of very few things that would require a single pole 30A circuit/breaker.


  5. #5
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    Default Re: Breaker wiring

    Quote Originally Posted by Speedy Petey View Post
    It's not inherently illegal, but I agree about the 30A used as a single pole.

    I can think of very few things that would require a single pole 30A circuit/breaker.

    Travel trailers & some commercial coffee makers are about all that come to mind...


  6. #6
    Fred Warner's Avatar
    Fred Warner Guest

    Default Re: Breaker wiring

    Quote Originally Posted by Tom Rees View Post
    No, I wrote up the wire was undersized but didn't know about the rest.
    The fact that the conductor was undersized is enough. Good job!


  7. #7
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    Default Re: Breaker wiring

    Quote Originally Posted by Fred Warner View Post
    The fact that the conductor was undersized is enough. Good job!

    Yep, let them replace it with a proper 20 amp breaker, and go single pole at that time.

    Simply a waste of money to use a double pole for a single pole.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  8. #8
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    Default Re: Breaker wiring

    Quote Originally Posted by Rollie Meyers View Post
    Travel trailers & some commercial coffee makers are about all that come to mind...
    Yup, and commercial bathroom hand dryers.


  9. #9
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    Default Re: Breaker wiring

    Quote Originally Posted by Jerry Peck View Post

    Simply a waste of money to use a double pole for a single pole.
    From a DIY standpoint, if it is already there and not being used many folks consider that a bonus.
    We look at it and roll our eyes.


  10. #10
    Join Date
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    Default Re: Breaker wiring

    Quote Originally Posted by Speedy Petey View Post
    From a DIY standpoint, if it is already there and not being used many folks consider that a bonus.
    We look at it and roll our eyes.
    DIY = Destroy It Yourself.


  11. #11
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    Manchester, Vermont
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    Default Re: Breaker wiring

    Rollie Meyers

    "DIY = Destroy it yourselft" L.O.L Thanks, that a keeper>


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