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    JPM71299's Avatar
    JPM71299 Posts: 4, Reputation: 1
    New Member
    		  
    #1

    May 30, 2007, 05:32 PM
    Watt capacity on a 20 Amp line
    Anyone know how many watts a 20 Amp line is rated for? I have two 1500 watt commercial grade hot plates (total 3000 watts) that I want to run on a dedicated 20 Amp receptacle (and yes it is a true heavy duty 20 amp recepticle).

    Thanks JPM71299
    BigRed1500's Avatar
    BigRed1500 Posts: 70, Reputation: 8
    Junior Member
    		  
    #2

    May 30, 2007, 06:06 PM
    Pretty sure I picked this formula up here on this website sometime last year:

    The calculation for power is:

    W=EI
    W=Watts ( or power)
    E = Volts
    I= Amperes

    W= 120 volts times 20 amps= 2400 watts

    If the circuit or load will operate more than 3 hours it is considered as a continuous load and the rating of the circuit is lilimited to ,or derated, to 80%or 1920 watts max on a 20 amp circuit.
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