Which gauge wire is recommended for a 20-amp circuit?

For a 20-amp circuit, the recommended wire gauge is 12-gauge. This choice is based on the National Electrical Code (NEC) standards, which suggest that 12-gauge wire is suitable for handling up to 20 amps of current safely. Using the correct wire gauge is crucial to ensure that the wire can handle the electrical load without overheating, which can pose a fire hazard.

While the number of outlets and the expected load can influence wiring decisions in a circuit's design, the basic guideline is that 12-gauge wire is the minimum size for any circuit that may carry a 20-amp load. This ensures adequate safety margins and performance in standard residential wiring applications. Thicker wires (like 10-gauge) can also be used for additional safety or to accommodate longer runs, but 12-gauge is the standard choice for a straightforward 20-amp circuit setup.