In which NEC® Article is the term Surge Protective Device (SPD) addressed?

The term Surge Protective Device (SPD) is specifically addressed in Article 242 of the National Electrical Code (NEC). This article outlines the requirements for surge protection to safeguard electrical equipment from voltage surges that can occur due to lightning strikes, utility switching, or other transient overvoltage events.

This is particularly important in maintaining the integrity and longevity of sensitive electronic equipment. Article 242 provides guidance on the proper installation, ratings, and performance of SPDs, including where they should be installed within electrical systems to ensure safety and effectiveness. Additionally, it emphasizes the need for proper grounding and bonding when implementing surge protection methods.

Other articles, such as those dealing with service equipment or grounding, do not specifically address topics related to SPDs, which is why Article 242 is the correct reference for this term.