Which article would provide guidelines for the installation of boxes used in electrical systems?

Article 312 of the National Electrical Code (NEC) specifically addresses the requirements for boxes used in electrical installations. This article outlines the conditions under which boxes must be installed, including their construction, placement, and the types of conductors that they can accommodate. This is crucial for ensuring safety and functionality in electrical systems, as the proper installation of boxes can affect the overall integrity of the electrical circuit.

The guidelines set forth in Article 312 help to maintain accessibility for maintenance, ensure adequate support and secure connections, and comply with spacing requirements necessary for proper heat dissipation. Different types of boxes, including junction boxes and pull boxes, are addressed under this article, detailing how they should be used in conjunction with conductors and other components of electrical systems.

Other articles focus on different aspects of electrical installations. For instance, Article 280 pertains to surge protective devices, while Article 300 covers general wiring methods and practices. Article 310 is focused on conductors for general wiring, leaving Article 312 uniquely positioned to address the specific needs and standards for electrical boxes.