Maximum light fixtures per circuit


Old 12-28-05, 11:20 AM
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Maximum light fixtures per circuit

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)
1800W - 360W Buffer = 1440W / 100W = 14 fixtures ?
Old 12-28-05, 11:26 AM
Join Date: Sep 2000
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Your analysis is all correct. I'd go with 14, assuming 100-watt fixtures.
Old 12-28-05, 01:50 PM
Join Date: Sep 2002
Location: welland ontario
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In Canada limit is 12 outlets per 15 amp circuit. Light must be on 15 amp circuit.

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