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View Full Version : How many amps for 300w


chaz66
Oct 18, 2013, 02:47 PM
Can anyone tell me how many amps are needed to run 3000 watts of lighting? Will a 20 amp circuit breaker be enough?

hkstroud
Oct 18, 2013, 03:00 PM
No, assuming 120 volts.
Voltage time amperage equals watts (power).
3000 watts divided by 120 volts equal 25 ampere.