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    MR Grouch's Avatar
    MR Grouch Posts: 4, Reputation: 1
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    #1

    Sep 6, 2007, 06:15 AM
    Wiring a 220 volt heater
    Please tell me what gauge wiring {for example 12/2 or 12/3} and breaker amperage {for example 30 amp 2 pole} I need for a 220 volt wall heater.:confused:
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Sep 6, 2007, 06:43 AM
    12-2 is 2 conductor w/ground. Good for 20 amps. If it requires 30 amps, you need 10-2 w/ground, if neutral is required then you will need 3 conductors plus ground.
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