Can I wire 2 ceiling fans and 5 ceiling spot lights and 3 closet ligthts on a singe circuit with 12 ga wire and a 15 amp breaker?Or should I wire the 2 ceiling fans on a separate circuit?
There should be no problem putting it all on a single 15 ampere circuit. Likely in the worst case scenario, each fixture would consume ~100 watts. That would be using large 52″ fans, and 100 watt bulbs in each fixture. With the 10 fixtures, that would be 1000 watts (10 * 100 = 1000). A 15 ampere 120 volt circuit can provide 1800 watts of power (15A * 120V).
More realistically, you”re going to be using lower wattage fixtures, especially nowadays with CFL and LED bulbs becoming more common. Here”s some calculations based on various wattage devices.
10 devices
100 watts = 1600 watts.
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Since it”s a 15 ampere circuit, you”ll only need 14 AWG conductors. Unless there”s a specific reason you”re using 12 AWG instead, which is also fine.
You are FINE with this. What you are proposing is a good way less than a 20A circuit could handle in this type of setting.
Personally I”d go with #14 on a 15A breaker for loads like this.
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Maximum number of devices on a breaker is 12. So you pass the first rule with only having 10 items. Also number 12GA for a 15 amp breaker works as well. If your ceiling fans are not some crazy ones. It”s fine on one circuit. I have never checked how many amps they draw cause its never very much, and i have never heard of it being a problem.Each 60W light is .5Amps so you have quite a bit of room if your bulbs are that wattage or less! Remember you can load your 15A breaker up to 12 amps before you run into code problems.

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