What is covered under Article 242 in the NEC?

Article 242 in the National Electrical Code (NEC) specifically addresses surge protection. This article covers the requirements for surge protective devices (SPDs), which are essential for minimizing the risk of electrical surges that can damage equipment and systems. The emphasis on surge arresters over 1000 volts is particularly relevant for medium- to high-voltage systems, where surges can be more severe and have significant consequences. Thus, the focus of Article 242 is on providing guidelines for the proper installation and use of these devices to protect electrical infrastructure from voltage spikes.

In contrast, other options do not align with the scope of Article 242. Health care facilities are covered under different sections of the NEC, focusing on the specific electrical needs and safety requirements in those environments. Definitions typically appear in a general introductory section or in multiple articles for improved clarity, rather than being a standalone emphasis of Article 242. General requirements address broader concepts and principles in the NEC, but again, these are not the specific focus of Article 242, which is dedicated to surge protection.