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    forest_100's Avatar
    forest_100 Posts: 7, Reputation: 1
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    #1

    Nov 28, 2007, 06:45 PM
    240V space heater to 208V supply
    I purchased a used construction 240V space heater (4.8KW) 12/2 cabtire wiring (rated 20A).

    Can I connect this to a 208V supply or must I re-size any items in the space heater
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Dec 1, 2007, 07:52 AM
    A 4800 watt unit will draw 20 amps at 240 volts, and 23 amps at 208 volts. Either way, this unit must be fed by a 30 amp circuit with all #10 wire.
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