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    George39's Avatar
    George39 Posts: 3, Reputation: 1
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    #1

    Nov 18, 2009, 06:25 AM
    110v timer on 220v hwh line ?
    Will installing a 110v timer on one leg of a 220v line to the hwh work?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Nov 18, 2009, 01:39 PM
    No, the timer will need a neutral in addition to the live line. Water heaters usually are only 240 volts and use two live lines, and do not need a neutral.

    They make 240 volt timers for controlling loads such as 240 volt water heaters.
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