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-   -   12/2 wiring and 20 amp breakers (https://www.askmehelpdesk.com/showthread.php?t=325010)

  • Mar 4, 2009, 03:25 PM
    Howie628
    12/2 wiring and 20 amp breakers
    I am finishing out a basement area. I am running 12/2 wiring throughout and putting in 20 amp breakers. Is this O.K. The reason I ask is that all the books I have read all show 14/2wiring and 15 amp breakers for lighting situations. On the other hand I can't find anything that indicates that using 12/2 and 20 amp for this application is against any codes or is dangerous, as long as the circuits are not overloaded. Please advise. Thanks

    Howie
  • Mar 5, 2009, 09:36 AM
    ballengerb1

    This is OK but you are spending more money than necessary. Can you explain your logic, did you just already have excess 12-2 wire? Are you installing 15 amp recptacles or 20 amp, they are diofferent?
  • Mar 5, 2009, 10:03 AM
    KISS

    You can use 12/2 for 15A or 20 A breakers. What you cannot do is use 14 AWG wire on a 20 A breaker.

    You can generally use a 15 A receptacle on a 20 A circuit. The 20 A versions cost more.
  • Mar 5, 2009, 02:02 PM
    Howie628

    Thanks for the reply's. They both answered my question. Yes ballengerb1 I did already have enough 12/2 wiring on hand(given to me by a friend who just built a house and had it leftover), so I will be saving money by not having to go buy 14 AWG wiring. Just wanted to make sure I wasn't going to be breaking any codes or rules. Thanks.
  • Mar 5, 2009, 02:53 PM
    ballengerb1

    You are good to go. The only issue to watch for most outlets will not let you stab a #12 wire into the back so you will need to use the side screws. If you have not bought the outlets you can get them that will take a #12.
  • Mar 5, 2009, 05:40 PM
    Howie628
    Thanks for the info. I don't use the push in tabs anyway. I always use the side screws. I feel they are safer. Thanks.
  • Mar 5, 2009, 05:58 PM
    KISS

    Howie, the pros, attach pigtails both the hot and the neutral, so the outlet screws see only one set of wires.

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