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    auto117584's Avatar
    auto117584 Posts: 1, Reputation: 1
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    #1

    Feb 8, 2010, 08:50 AM
    How is amperage determined in a 240V appliance?
    I have a 240V 2000 watt heater. The double-pole thermostat says 17A. 2000 watts divided by 240 volts equals 8.33 amps, so why does it say 17? Apparently 17 is twice 8.33; is that the cumultative amperage rating? Thanks
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Feb 8, 2010, 09:03 AM
    As you calculated the heater will draw 8.3 amps.

    The thermostat is a switch that can handle up to 17 amps, and no more.
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