Soundbit,
You are correct......
If the overcurrent device, breaker, is a 15 amp then the branch circuit is a 15 amp branch circuit. Even if the branch circuit wire is #12 awg.
With that said according to NEC code, only a 15 amp receptacle can be installed on a 15 amp branch circuit.
You can install two or more 15 amp receptacles, (a duplex is two), on a 20 amp branch circuit per NEC.
Per NEC a 20 amp receptacle can only be installed on a 20 amp branch circuit.
The branch circuit breaker must be a 20 amp. And the branch circuit wire must be a minimum size of #12 awg, per NEC.
You are correct......
If the overcurrent device, breaker, is a 15 amp then the branch circuit is a 15 amp branch circuit. Even if the branch circuit wire is #12 awg.
With that said according to NEC code, only a 15 amp receptacle can be installed on a 15 amp branch circuit.
You can install two or more 15 amp receptacles, (a duplex is two), on a 20 amp branch circuit per NEC.
Per NEC a 20 amp receptacle can only be installed on a 20 amp branch circuit.
The branch circuit breaker must be a 20 amp. And the branch circuit wire must be a minimum size of #12 awg, per NEC.