I'm making an extension cord from 12/3 from sjoow wire. I have a 15amp gfci and a 15amp duplex outlet. Do I use 15amp or 20amp outlets, or would it matter?
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If the outlet is 15A, that pretty much means the plug you put in needs to be 15A. 20s will go either way, 15s only take 15s.– EcnerwalCommented Oct 7, 2022 at 13:45
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On the extension cord itself, the socket must = the plug. So 15 and 15...... Or 20 and 20.
On the wall receptacle, on 15A circuits (circuits with #14 wire and 15A breakers) you must use 15A in-wall sockets.
If a circuit is all #12 in-wall wire, and the breaker is 20A, then you are free to choose either 15A or 20A in-wall receptacles. Provided you are using dual sockets like the normal kind.
If a circuit powers one single "solo" socket, then the socket amps must match breaker amps.
answered Oct 7, 2022 at 7:41
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