Which of the following receptacles is permissible on a 20-amp, 120-volt branch circuit?

A receptacle that is permissible on a 20-amp, 120-volt branch circuit can include both 15-amp and 20-amp rated receptacles. This is based on the National Electrical Code (NEC), which allows the use of 15-amp receptacles on circuits rated for higher amperages, such as 20 amps. This means that devices and appliances designed to be plugged into a 15-amp receptacle can safely draw power from a 20-amp circuit.

The inclusion of a 15-amp receptacle on a 20-amp circuit provides flexibility in the types of devices that can be used, accommodating both lower and higher power requirements without compromising safety. Furthermore, you can still utilize a 20-amp receptacle, which is also suitable for this type of circuit, ensuring that both options are compliant with electrical safety standards.

Understanding the guidelines around receptacle ratings is crucial for safety and functionality within electrical installations.