How Many Lights/outlets On One Circuit? - Electrical - DIY Chatroom Home Improvement Forum

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Old 12-11-2012, 08:35 PM   #1
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how many lights/outlets on one circuit?

I have two questions.
In my shop I'm installing 10 8' florescent lights. ( they have (4) 4" 32w T8 bulbs per light). They will be wired to 3 switches, 2 switches will have 4 lights and 1 switch will have 2 lights. using 12-2 MC cable. Should I run each switch on a 20 amp breaker or will all of the lights be ok on a 20 amp breaker?

How many outlets can be on one branch? I have 15amp and 20amp outlets. I want to use both 15 and 20 amp breakers due to I have both and to use up.

Thanks in advance.


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Old 12-11-2012, 08:45 PM   #2
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There is no limit. You would have to check the amperage of the fixtures to determine if 1 or 2 circuits are necessary.

I'm guessing that each fixture is going to draw 1.5-2 A. I would put the lights on 2 15 A circuits.

As far as receptacles, again, it would depend on the equipment you plan on using. You can use 15A receptacles on a 20A circuit and you can use 20A receptacles on 15A circuits.


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Answers based on the National Electric Code. Always check local amendments.

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