What is the allowable ampacity of a 14 AWG fixture wire?

The allowable ampacity of a 14 AWG fixture wire is 15 amperes. Ampacity refers to the maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration. For 14 AWG wires, the National Electrical Code (NEC) establishes standard ampacity ratings based on the wire's insulation type and ambient temperature.

In most common applications, if the wire is copper and has a typical insulation type, it can handle up to 15 amperes safely. While other ampacity options like 10, 17, and 20 amperes exist for different wire types or specific conditions, 15 amperes is the recognized standard for 14 AWG in general residential or commercial wiring applications. Understanding this standard is crucial for ensuring safety and compliance with electrical codes.