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Old 02-28-2013, 06:40 PM   #1
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20A breaker question


Newbie question: I live in an old building and just noticed that our fixtures rated for 15A/125V (outlets, lights, etc.) are tied into a 20A breaker (wiring is 12g). Is it OK for the breaker to be 5A higher than the fixtures?

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Old 02-28-2013, 06:43 PM   #2
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20A breaker question


If you are in the US, there should be no problem.

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Old 02-28-2013, 06:53 PM   #3
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20A breaker question


I am no electrician, but my understanding is that if there are more than one outlet on the circuit & the wire is rated for 20 amps (12/2 for example) & the outlets are rated for a pass through of 20 amps, than this is OK. Please have someone else verify this though.
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Old 02-28-2013, 08:19 PM   #4
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20A breaker question


What most people fail to realize is that a 15A duplex receptacle is TWO 15A receptacles on one yoke.
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Old 02-28-2013, 08:27 PM   #5
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20A breaker question


Then that would be on a 30 amp fuze.
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Old 02-28-2013, 08:51 PM   #6
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20A breaker question


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Then that would be on a 30 amp fuze.
I don't get it.
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Old 02-28-2013, 09:17 PM   #7
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20A breaker question


A typical 15A duplex receptacle is rated for 15A.....it will only allow devices rated for 15A or less to be plugged in.



A 20A receptacle has a slightly different arrangement...



So, a device with a 20a plug can't be plugged into a 15a outlet.....

Clear as mud?
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Old 03-01-2013, 03:43 AM   #8
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20A breaker question


15 amp receptacles are fine on a 20 amp circuit in a residence. The wire gauge is more important. The only really good reason to get 20 amp receptacles is if you have a device with a 20 amp specific plug. Those are very rare.

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Old 03-01-2013, 04:56 AM   #9
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20A breaker question


15 amp receptacles are rated for 20 amp pass thru, if you choose to do instead of wirenutting.
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Old 03-01-2013, 08:33 PM   #10
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20A breaker question


Quote:
Originally Posted by Southbound View Post
Newbie question: I live in an old building and just noticed that our fixtures rated for 15A/125V (outlets, lights, etc.) are tied into a 20A breaker (wiring is 12g). Is it OK for the breaker to be 5A higher than the fixtures?
If there is more than one outlet it is quite normal !
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Old 03-01-2013, 10:13 PM   #11
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20A breaker question


Ordinary Underwriters Laboratories rated 120 volt light fixtures may be installed on 20 amp circuits. Switches rated for 15 amps may be installed on 20 amp circuits although the wiring downstream still has to be at least 12 gauge. The minimum two receptacle requirement is satisfied with one duplex or two (typically round) singles.

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