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Old 01-13-2008, 11:51 AM   #16
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2 quick questions about recepticles


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Originally Posted by chris75 View Post
umm buddy, try reading the code, you CAN install a SINGLE 15 amp receptacle on a 20 amp Individual branch circuit, read 210.21(B)(1) and tell me that you cannot!!!

210.21(B)(3) is for two or more receptacles or outlets, I dont know why guys have a hard time with this section... a duplex would fall under two or more receptacles, a single round receptacle would not!
First you are reading this all wrong. Read the references I posted.

Second your original statement was that you could put a 20 amp rec on a 15 amp circuit. Now your defence has to do with a 15 amp rec on a 20 amp circuit.

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Old 01-13-2008, 12:11 PM   #17
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"Please understand the code before shouting out wrongful information."
That made my entire weekend. This thread is awesome.
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Old 01-13-2008, 03:36 PM   #18
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2 quick questions about recepticles


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umm buddy, try reading the code, you CAN install a SINGLE 15 amp receptacle on a 20 amp Individual branch circuit, read 210.21(B)(1) and tell me that you cannot!!!

210.21(B)(3) is for two or more receptacles or outlets, I dont know why guys have a hard time with this section... a duplex would fall under two or more receptacles, a single round receptacle would not!
210.21(B)1
A single receptacle on an individual branch circuit must have an ampacity not less than the rating of the overcurrent protection device.

Last edited by jerryh3; 01-13-2008 at 05:09 PM. Reason: Mistake
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Old 01-13-2008, 04:20 PM   #19
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2 quick questions about recepticles


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210.21(B)1
A single receptacle on an individual branch circuit must have an ampacity not less than the rating of the overcurrent protection device[sic].

Why are YOU having such a hard time understanding this??
Actually, it reads "not less than that of the branch circuit."

Anyway, in post #15, JV mentioned 20A breaker, 12 AWG. wire. What is there not to understand? If it's a duplex, it can be 15A but a duplex is not a single receptacle.

Am I missing something? Buehler?
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Old 01-13-2008, 05:02 PM   #20
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2 quick questions about recepticles


Lets end the confusion right here...

Single Receptacle on an Individual Branch Circuit shall have an ampre rating not less than that of the branch circuit.

20a single receptacle good on a 15 amp branch circuit...

20 amp receptacle is not less than 15amp circuit correct?

and yes I screwed up post #13, sorry for the confusion. I did add an edit for those following along at home...


Now, this may be a bad design, but its not a code violation...

Last edited by chris75; 01-13-2008 at 05:34 PM.
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Old 01-13-2008, 05:17 PM   #21
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2 quick questions about recepticles


Confusion is over. All is good. Peace is restored. Andy, glad it could be entertainment.
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Old 01-13-2008, 05:22 PM   #22
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I know its hard to understand the logic that a 20 amp device be installed on a 15 amp circuit, but there is no safety hazard.
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Old 01-13-2008, 06:42 PM   #23
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The NEC is not nor will ever be a safety manual. Put a single 20A recp on a 15A branch circuit in the ATL and you will be red tagged. Maybe I'm confused.
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Old 01-13-2008, 06:55 PM   #24
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2 quick questions about recepticles


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The NEC is not nor will ever be a safety manual. Put a single 20A recp on a 15A branch circuit in the ATL and you will be red tagged. Maybe I'm confused.

Would you like to share why you think this would be a problem? Yes I agree its a bad design, but its not a safety issue... So lets say you do happen to own the one item that actually is a 20 amp cord, the worst case scenario is that the OCP trips...

And unless your state has a amendment saying to disregard 210.21(B)(1), then you have inspectors making up their own rules.

Last edited by chris75; 01-13-2008 at 06:58 PM.
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Old 01-13-2008, 07:06 PM   #25
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2 quick questions about recepticles


Table210.21(b)3
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Old 01-13-2008, 07:11 PM   #26
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Table210.21(b)3

Why does everyone keep going to that table? It is ONLY for two or more receptacles... Read 210.21 (B)(3), and for the last time try reading 210.21 (B)(1), now there may be some confusion with what a duplex receptacle and a single receptacle is, i'm not sure, but it is all spelled out.
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Old 01-13-2008, 07:12 PM   #27
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2 quick questions about recepticles


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Table210.21(b)3
That table is for multiple receptacle circuits.
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Old 01-13-2008, 07:23 PM   #28
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Why does everyone keep going to that table? It is ONLY for two or more receptacles... Read 210.21 (B)(3), and for the last time try reading 210.21 (B)(1), now there may be some confusion with what a duplex receptacle and a single receptacle is, i'm not sure, but it is all spelled out.
Andy is straight up wrong. I concede this code debate to Chris. Bad design? Yes... Code violation? I'm thinking not. Well played
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Old 01-13-2008, 07:27 PM   #29
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2 quick questions about recepticles


Everyone has to remember that the NEC is pretty much minimum, and a breaker tripping is really not a safety concern, maybe an inconvenience, but it will not start your house on fire. I hope everyone understands the exceptions to this code, and if you do not PLEASE ask...
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Old 01-13-2008, 07:27 PM   #30
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