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

    Nov 29, 2007, 03:06 PM
    Electrical amps and watts
    How many watts will a home current 15 amp circuit support? Is a 20 amp circuit simply pro rata greater
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Nov 29, 2007, 05:12 PM
    1800 watts of load that runs less than 3 hours, 1440 watts for a load that runs 3 hours or more.

    A 20 amp is 2400 watts and 1920 watts respectively.

    Any load that runs 3 hours or more rates the wire and breaker at 125% of the load.
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