What branch circuit size is specified for small-appliance circuits?

The specified branch circuit size for small-appliance circuits is 12 AWG. This gauge is suitable for circuits that supply small appliances in kitchens and other areas of the home, as it is designed to safely carry 20 amperes of current, which is the typical requirement for these circuits.

Using 12 AWG wire ensures that the circuit can handle the load from multiple kitchen appliances, such as toasters, blenders, and microwaves, without overheating or posing a fire hazard. In residential wiring, circuits designated for small appliances must comply with National Electrical Code (NEC) requirements, which dictate the use of 12 AWG wire to provide adequate protection and account for the potential draw of equipment commonly used in these areas.

Choosing a larger gauge wire, such as 10 AWG or 8 AWG, would be unnecessary and more expensive, while a smaller gauge, like 14 AWG, does not meet the safety requirements for these circuits, as it can only handle up to 15 amperes and may lead to overloading if used improperly.