Which article of the NEC covers rules for branch circuit installation?

Article 210 of the National Electrical Code (NEC) specifically addresses branch circuits, laying out guidelines for their installation. This article covers various critical aspects such as the requirements for circuits serving dwelling units, the load calculations necessary for proper sizing, and the standards for outlets and receptacles. It ensures that branch circuits are designed to safely and effectively carry electrical loads specific to their intended applications, which plays a crucial role in the overall safety and functionality of electrical systems in residential and commercial properties.

Other articles listed, such as Article 220, focus on load calculations; Article 230 deals with service entrance conductors and systems; and Article 240 is about overcurrent protection, which are all important but do not specifically govern the details of branch circuit installations. Understanding the purpose and scope of each article helps clarify why Article 210 is the correct reference for branch circuit guidelines.