The primary types of conductors and circuits that are used for power distribution are :

• service conductors
• feeders,
• and branch circuits

Feeder Conductors

Feeder conductors are defined as all conductors between the service equipment, source of supply of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.

Feeders often supply a panelboard from another switchboard or panelboard. Including service equipment.

Branch Circuits

Branch circuit conductors are defined as the circuit conductors between the final overcurrent device and the outlet(s).