What is a feeder according to NEC terminology?

A feeder, as defined by the National Electrical Code (NEC), refers specifically to a conductor that connects the service equipment to the branch circuits. This definition is crucial because it highlights the role of feeders in the overall electrical distribution system within a building or facility. Feeders are responsible for carrying electrical energy from the main service equipment, such as a service panel, to the various branch circuits that distribute electricity to different areas or devices.

Understanding the term "feeder" also helps clarify the hierarchy of electrical components. It is distinct from service conductors, which connect the utility service to the service equipment, and branch circuits, which directly power receptacles, lighting, and appliances. By clearly identifying the feeder's function, electricians can better plan and implement safe and efficient electrical systems, ensuring compliance with relevant codes and standards.