What is the difference between a branch circuit and a feeder?

What is the difference between a branch circuit and a feeder?

• A. A feeder runs between panels or from a service disconnect to subpanels.
• B. A feeder connects a device to a local outlet.
• C. A branch circuit carries power from the service to subpanels.
• D. There is no difference; they are the same.

Answer: (D)

In electrical systems, a feeder is the segment that moves power from service equipment or a main distribution panel to another distribution point, such as a subpanel or large piece of equipment. A branch circuit, on the other hand, starts from a panel and goes out to individual loads like outlets, lights, or appliances. So the feeder’s job is to feed a set of downstream circuits, while branch circuits deliver power to specific devices. The option describing a feeder as running between panels or from a service disconnect to subpanels matches this distinction, since it captures the idea of linking distribution points rather than delivering power to a single receptacle. The idea that a feeder connects a device to a local outlet fits a branch circuit, not a feeder. Saying a branch circuit carries power from the service to subpanels would actually describe a feeder’s function, not a branch circuit. And claiming there’s no difference overlooks the practical roles and typical term definitions used in the NEC.

In electrical systems, a feeder is the segment that moves power from service equipment or a main distribution panel to another distribution point, such as a subpanel or large piece of equipment. A branch circuit, on the other hand, starts from a panel and goes out to individual loads like outlets, lights, or appliances. So the feeder’s job is to feed a set of downstream circuits, while branch circuits deliver power to specific devices.

The option describing a feeder as running between panels or from a service disconnect to subpanels matches this distinction, since it captures the idea of linking distribution points rather than delivering power to a single receptacle. The idea that a feeder connects a device to a local outlet fits a branch circuit, not a feeder. Saying a branch circuit carries power from the service to subpanels would actually describe a feeder’s function, not a branch circuit. And claiming there’s no difference overlooks the practical roles and typical term definitions used in the NEC.