Currently I'm not able to pull the built-in microwave out to examine the outlet, so am leaning on the expertise here. It is a duplex outlet and the connected breaker is 20A, constructed around 2005. I'm looking at replacing the existing outlet with a recessed outlet to accommodate the larger depth of a new microwave. The new microwave is rated at 14.7A.
I have found a single receptacle 20A standard clock hanger recessed outlet. Is there any reason NOT to use this? Because it is a built in, there is no practical need for a duplex outlet.
The other option available is 15A recessed duplex outlet. Is it within code to put a duplex 15A outlet on a 20A breaker?
Best Answer
A duplex 15 amp receptacle is legal on a 20 amp circuit. As long as there are 2 or more 15 amp receptacles on a 20 amp branch circuit it is code compliant with the NEC see table 210.21.B.3