What is the focus of Article 215 in the NEC?

Article 215 of the National Electrical Code (NEC) specifically addresses feeders. Feeders are defined as the conductors that carry electrical current from the service equipment or a service point to a specific distribution point (such as a subpanel), but they do not terminate at the utilization equipment. This is crucial because feeders are responsible for distributing the electrical power to various segments of the electrical system, and they must be sized and installed properly to handle the load without overheating or causing voltage drops.

Understanding feeders is vital for electrical installation, as they connect different parts of a building’s electrical system and ensure that adequate power is supplied to branch circuits. This article encompasses design considerations, conductor sizing, overcurrent protection, and other installation guidelines specifically for feeders, making it a significant focus within the NEC.

In contrast, the other options pertain to different components of electrical installations: services are covered in Article 230, branch circuits are under Article 210, and general installation practices can be found throughout various articles in the NEC, but not specifically within Article 215.