Wayne Whitney wrote:
On 2009-11-30, RBM wrote:

"Wayne Whitney" wrote in message

If by 20A socket you mean a receptacle that accepts a 20A plug, then
yes, that would be a violation, unless it is a single receptacle that
is the only receptacle on the circuit.
You're thinking 15 amp receptacle, on 20 amp circuit. OP wants 20 amp
receptacle on 15 amp circuit

Oddly, if you have an individual branch circuit with only a single
receptacle on it, the only NEC restriction is that the receptacle
rating matches or exceeds the branch circuit rating, as per
210.21(B)(1). Only if there is more than one receptacle on the
circuit (or a duplex receptacle) do the requirements of 210.21(B)(3)
kick in, which prohibts a 20A receptacle on a 15A branch circuit.

Cheers, Wayne

Seems odd that a single 20A receptacle on a 15A ckt is not covered in
those sections. It is covered in 406.3-A. A single 20A receptacle on a
15A ckt is a violation.

There appears to still be a hole in that if there is no ground you can
replace a single receptacle on a 15A circuit with a 20A receptacle with
no ground. It is a much more limited hole. The intent is clearly that
this not be done.

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bud--