Feeder conductors run between the source and the final branch-circuit OCPD [See Art. 100 definition]. The source may be a transformer, the utility, a generator, a battery, or something else that supplies electricity.
The final branch-circuit OCPD isn’t what it might appear to be at first glance. When we design branch-circuits, we do that from the load toward the source (e.g., how many lights, what size OCPD to supply that load, what size conductor to carry the load for which t