What is the smallest size wire allowed for small appliance circuits?

The smallest size wire allowed for small appliance circuits is No. 12. This gauge is significant because it is designed to handle the standard current load for household circuits, which typically support light fixtures, outlets, and appliances. Using No. 12 wire for small appliance circuits ensures that the wiring can safely carry up to 20 amps, which is a common requirement for many circuits in residential settings.

Adhering to the appropriate wire gauge is crucial for both safety and efficiency, as using a wire that is too small can lead to overheating and potential fire hazards. In contrast, a larger gauge wire, such as No. 10, is generally reserved for circuits needing higher capacity, while smaller sizes like No. 14 and No. 16 are not suitable for the load requirements of small appliance circuits, as they can handle less current and thus present a safety risk if used inappropriately.