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    bill984's Avatar
    bill984 Posts: 3, Reputation: 1
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    #1

    Oct 10, 2011, 12:24 PM
    Can I run 10ga wire to a 15 amp outlet?
    I am running 10gage wire from a 40 amp breaker to a 40amp 2 breaker outdoor box. It will hold 2 20 amp breakers. 1 to run an air conditioner/heat pump (9000 BTU calling fror 15 amp breaker) and 1 for the wall outlets. The box will be mounted maybe 10 ft away. I was going to come off the 2 breakers with 12 ga romex. Do you see any problem here?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Oct 10, 2011, 01:39 PM
    I don't know how long your run will be but that 10 awg wire is undersized for 40 amps even for a short run. Drop down to 8 awg or larger if run is more than 50'
    bill984's Avatar
    bill984 Posts: 3, Reputation: 1
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    #3

    Oct 10, 2011, 05:10 PM
    Cool, thanks a lot.
    bill984's Avatar
    bill984 Posts: 3, Reputation: 1
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    #4

    Oct 10, 2011, 05:11 PM
    The run is about 65', so I'll go with 8. will that fit on a 20amp single pole breaker?
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