Where can the requirements for branch circuits and AFCI/GFCI protection of branch circuits be found?

The requirements for branch circuits, including the specifications for AFCI (Arc-Fault Circuit Interrupter) and GFCI (Ground-Fault Circuit Interrupter) protection of those circuits, are outlined in Article 210 of the National Electrical Code (NEC). This article addresses the general requirements for branch circuits, including their design and implementation. It focuses on ensuring safety and functionality in electrical installations, which is crucial for residential and commercial electrical systems.

AFCI protection is specifically designed to prevent fires caused by arcing fault conditions, while GFCI protection is meant to prevent electric shock in wet or damp locations. Understanding the requirements in Article 210 helps electrical professionals ensure that the circuits they install meet safety standards and provide adequate protection against electrical hazards.

The other articles address different aspects of electrical installations: Article 220 deals with branch circuit, feeder, and service calculations; Article 310 focuses on conductors for general wiring; and Article 625 pertains to the grounding and bonding of electric vehicle charging systems. While these articles are important, they do not specifically cover branch circuits and their corresponding protective measures.