What are feeder conductors used for?

Feeder conductors play a crucial role in the electrical distribution system by supplying power from the main service equipment, such as the main panel, to sub-panels and branch circuits. This function is essential for ensuring that electrical distribution is managed efficiently and safely across various points in a building or facility.

The feeders carry the current needed for the operation of sub-panels, which then can supply individual circuits for lighting, appliances, and other devices throughout the structure. Having a designated set of conductors for this purpose helps in maintaining a clear and organized electrical system, allowing for easier troubleshooting and load management.

In the context of the other options, while connecting devices to outlets is a function of branch circuits, and providing a ground connection is vital for safety, they do not pertain to the primary role of feeder conductors. Similarly, while distributing circuit loads evenly is important for electrical safety and performance, it is not the direct function of feeder conductors specifically. Thus, the selection of the answer regarding the supply of power to sub-panels accurately reflects the fundamental purpose of feeder conductors in the electrical system design.