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    409FLORA's Avatar
    409FLORA Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 27, 2008, 06:16 PM
    Wiring a 220 hot water heater
    If I run 10/3 wire black and red to a double pull 30 and the other ends to black and red on heater and ground to ground screw and to ground bar what do I do with the white one thanks
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Oct 27, 2008, 06:20 PM
    IF you must run 10/3 you should just cap off the white on both ends.

    Most of us run 10/2 to a water heater because that's all that's needed. There is NO neutral in a straight 240v circuit. Yes, you can use the white and black as your two hots.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #3

    Oct 27, 2008, 08:28 PM

    Use the black and red as your two hots, not white and black as suggested.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #4

    Oct 27, 2008, 09:18 PM
    KISS, I was suggesting to use the black and white of a 10/2 cable.
    Read the first sentence in my reply.
    aroslinger1's Avatar
    aroslinger1 Posts: 35, Reputation: 1
    Junior Member
    		  
    #5

    Oct 28, 2008, 12:28 PM
    Leave it disconnected at both ends
    Water heaters on need a 2 wire w/ground
    aroslinger1's Avatar
    aroslinger1 Posts: 35, Reputation: 1
    Junior Member
    		  
    #6

    Oct 28, 2008, 12:29 PM
    Put the black and the white on breaker and at leads at water heater
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