I went to replace the over-range microwave today, only to discover that the old one ran on a 220V line:
…but the new one only needs a 110V receptacle:
Am I correct in assuming that I can use the existing wiring, swap the 220V outlet for two 110V two-outlet boxes, and then remove the 220V breaker in the box for a single 110V breaker (40 amp down to 20, I think)? Is this advisable? I know DIYers who swap out breakers all the time, but I'll need to do some reading before I tackle that…
Best Answer
What size are the wires? A 40 AMP circuit is probably 8 or 10 AWG, neither of which will likely fit in the terminals of a 20 ampere receptacle. Which means you'll have to use a 12 AWG pigtail, to attach the receptacle to the circuit.
Aside from that, you've got it about right.