Which of the following is a safety standard commonly referenced in electrical installations?

The National Electrical Code (NEC) is widely recognized as the principal safety standard governing electrical installations in the United States. It provides comprehensive guidelines that ensure the safe installation of electrical wiring and equipment. The NEC addresses various aspects of electrical safety, including load calculations, grounding, and circuit protection, ultimately aiming to minimize the risk of electrical hazards such as shocks and fires.

This standard is regularly updated to incorporate new technologies and safety practices, reflecting the evolving nature of electrical installations. Compliance with the NEC is essential not only for safety but also for legal and insurance requirements in many jurisdictions.

While organizations like the IEEE, ANSI, and ISO do contribute significantly to standard-setting in various technical and industrial fields, they are not specifically dedicated to electrical installation safety as the NEC is. The IEEE focuses more broadly on electrical and electronic systems, while ANSI serves as a coordinating body for many standards across multiple sectors. ISO standards tend to address international quality and safety systems rather than specific electrical installation practices. Therefore, NEC stands out as the most relevant standard for safety in electrical installations.