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    newbie1p's Avatar
    newbie1p Posts: 1, Reputation: 1
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    #1

    Sep 15, 2010, 08:20 AM
    Use of 208 Volt verses 240 Volt?
    Pleas help me with the following. If an electrical device is used for heating purposes with a rating voltage of 240 volts, why does it take longer to heat up when connected at a 208 volt source. It seems to me that the current will be higher than a 240 volts and consequently the heating device will heat up faster.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Sep 15, 2010, 08:25 AM
    Ohms Law is involved.

    When suppying a 240 volt heater with 208 volt, the heat output is lower as the wattage consumed is lower proportionally.

    The resistance of the unit heater remained the same.
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