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    thecheeze's Avatar
    thecheeze Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 16, 2013, 07:14 PM
    Can a new 20 amp wall oven be wired to an existing 40 amp wire and breaker?
    The existing 8 gauge wire going to the breaker box cannot be changed (no access to box from attic). I guess the question is can the breaker itself be changed and if so, to a 20 or 30 amp?
    Hoot Jigger's Avatar
    Hoot Jigger Posts: 3, Reputation: 2
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    #2

    Nov 16, 2013, 07:26 PM
    Yes, you can downsize the breaker... the problems you may face are getting that #8 into the lug opening of a 20 amp breaker, I wouldn't use a 30 if the oven is rated 20. At the wall oven, depending on the termination box, the same problem may exist.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #3

    Nov 16, 2013, 08:08 PM
    Add a #12 pig tail to the end of the #8 and connect to breaker.
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