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    sweetnsassy11871's Avatar
    sweetnsassy11871 Posts: 1, Reputation: 1
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    #1

    Mar 30, 2008, 12:29 PM
    Wiring info
    How many lights can I run on a 20 amp breaker using 75 watt bults?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Mar 30, 2008, 12:39 PM
    It depends on the capacity of the fixtures, NOT the actual lamps you will be using in the fixtures.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #3

    Mar 31, 2008, 07:49 AM
    Also,
    Volts X Amps = Watts(120 X 20 = 2400 Watts)
    Derate by 80%(2400 X .8 = 1920 Watts)for 3 hours or more.
    Then, 1920/75 = 25.6 Bulbs)
    25 75 Watt bulbs.
    wcoyle's Avatar
    wcoyle Posts: 5, Reputation: 1
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    #4

    Apr 24, 2008, 07:24 PM
    Quote Originally Posted by sweetnsassy11871
    how many lights can i run on a 20 amp breaker using 75 watt bults?
    25
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