Lighting, Light Fixtures, Ceiling and Exhaust Fans - Maximum light fixtures per circuit

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mike015
12-28-05, 11:20 AM
How can I determine what is the maximum number of light fixtures that can be on a new 15 Amp circuit?

Is it a fixed number?
Is it based on the fixtures? ie.
120V x 15A = 1800W
1800W / 100W fixtures = 18 fixtures ? (most likely will trip)
or
1800W - 360W Buffer = 1440W / 100W = 14 fixtures ?

John Nelson
12-28-05, 11:26 AM
Your analysis is all correct. I'd go with 14, assuming 100-watt fixtures.
joed
12-28-05, 01:50 PM
In Canada limit is 12 outlets per 15 amp circuit. Light must be on 15 amp circuit.