I just bought a 41 year old house. I am changing all the old 15 amp receptacles with new 15 amp receptacles. I noticed that the wiring is 12 gauge and the circuit breakers to those 15 amp receptacles are all 20 amp breakers.
1. Because those receptacles are of 15 amps, should I also change the circuit breakers from 20 amps to 15 amp breakers?
2. If yes, can I leave the wires alone at 12 gauge instead of changing them out to 14 gauge?