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    morrisjw's Avatar
    morrisjw Posts: 1, Reputation: 1
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    #1

    Jun 8, 2010, 07:16 PM
    Wire gauge for 35 AMP circuit breaker
    What wire do you need to run from a 35 amp breaker. The application is for an air conditioner.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Jun 9, 2010, 04:16 AM

    Never seen any ac run on a 35 amp? Usually 30 or 40. What size is the unit? Best bet is to go 40 amp 8 wire
    amin9sujo's Avatar
    amin9sujo Posts: 2, Reputation: 1
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    #3

    Oct 1, 2010, 01:12 PM
    Comment on Joshdta's post
    It's a commercial unit the label said 43.1 amp
    EndlessGrowth's Avatar
    EndlessGrowth Posts: 1, Reputation: 1
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    #4

    Nov 11, 2010, 05:12 PM
    Read the A/C nameplate; there are special rules for A/C units that allow for smaller wire than typical rules of #10/30A, #12/20A, #14/15A, etc. the nameplate will tell you max breaker size and min wire size. Due to large startup/surge current. A/C's compressor should have an internal overload to protect the smaller wire while running...
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