What is described as including all circuit conductors between service equipment and the final branch-circuit overcurrent device?

The term that encompasses all circuit conductors between service equipment and the final branch-circuit overcurrent device is referred to as a feeder. The feeder serves as a vital link that carries electrical power from the main service panel or distribution point to various branch circuits that supply power to outlets and devices throughout a facility.

Understanding this concept is crucial in electrical distribution as it highlights how power is routed and managed within a building. The feeder ensures that the electrical load is distributed appropriately and safely to multiple areas. The term emphasizes the importance of these conductors, as they play a critical role in managing load handling and preventing overload situations.

The other terms, while related to electrical circuits, pertain to different aspects. A main circuit typically refers to the entire primary service line that feeds the building, while a distribution circuit suggests a group of circuits supplied by the feeder that subsequently deliver power to various outlets and devices. A sub-circuit usually refers to a secondary branch that derives power from a distribution circuit, focusing more on localized delivery rather than the broader function of a feeder.