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    MrTkarateguy's Avatar
    MrTkarateguy Posts: 2, Reputation: 1
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    #1

    Mar 28, 2008, 07:21 AM
    15 amp circuit
    How many lights can I put on a 15 amp circuit breaker?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Mar 28, 2008, 07:30 AM
    Volts X Amps equals Watts.
    120 X 15 = 1800 watts.
    Derate 80%
    1800 X .8 = 1440 Watts to work with.
    1440/60 watt bulbs = 24 (60 Watt Bulbs) or 14 100 watt bulbs.
    Credendovidis's Avatar
    Credendovidis Posts: 1,593, Reputation: 66
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    #3

    Mar 30, 2008, 06:45 AM
    Quote Originally Posted by Stratmando
    1440/60 watt bulbs = 24 (60 Watt Bulbs) or 14 100 watt bulbs.
    That's why all these "marijuana-in-the-loft" growers bypass the measuring system... :D
    :rolleyes:
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