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

The primary difference between a feeder and a branch circuit lies in their functions and how they distribute electrical power. Feeder circuits are responsible for distributing electrical power from a main service panel to different distribution points, which can include various branch circuits. They have a higher capacity and are designed to carry power to multiple locations or systems within a facility.

Branch circuits, on the other hand, are intended to supply power directly to specific outlets or devices. They draw from the feeder circuits and distribute electricity to the end-use equipment. In essence, branch circuits provide the final connection to the loads they serve, whether that be lighting, receptacles, or appliances.

Understanding this distinction is crucial in the design and implementation of electrical systems, as it informs decisions on circuit sizing, protection, and overall load management within a facility. This configuration helps ensure that circuits are properly balanced and capable of handling the anticipated electrical load.