What is the appropriate fuse or breaker for a 14-awg conductor?

A 14-awg conductor is designed to handle a specific amount of electrical current, and in residential wiring, it is typically rated for a maximum continuous current of 15 amps. This rating is established to ensure safe operation and to prevent overheating of the wires. Using a breaker or fuse rated for 15 amps allows for adequate protection; it will trip if the current exceeds this threshold, helping to prevent potential electrical fires or damage to the wiring.

Choosing a 15-amp breaker aligns with the National Electrical Code (NEC) guidelines, which recommend that conductors be protected by overcurrent devices that match their ampacity. A 10-amp breaker would provide insufficient protection for typical household devices that a 14-awg wire might be used for, potentially causing nuisance trips. Conversely, higher rated breakers, such as 20, 25-amp, or more, would not provide adequate protection, as they could allow too much current to flow through the 14-awg conductor, leading to overheating and a fire hazard. Therefore, a 15-amp breaker is the appropriate choice for a 14-awg conductor.