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    shaai's Avatar
    shaai Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 26, 2010, 06:17 PM
    15 amps how many watts
    I want to use 20amp doblepole breaker to carry 220 v.how many amps they can carry?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #2

    Feb 26, 2010, 07:27 PM

    Volts Times Amp equal watts
    20 X 220 = 4400 Watts, if 240 volts, then 20 X 240 = 4800 Watts, you have to derate to 80% if continuous loads/over 3 hours, so multiply your watts X .8
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #3

    Feb 26, 2010, 07:35 PM

    Well, a 20 amp breaker will carry, hm, I guess 20 amps?

    That's the upper design limit.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #4

    Feb 26, 2010, 08:00 PM
    ... ahh... what size wire are you using, or is it in place already?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #5

    Feb 27, 2010, 05:06 PM

    How does the title "15 amps how many watts" fit into it?
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