An important reference for an effective maintenance program is?

The reference that is pivotal for an effective maintenance program is NFPA 70B. This standard specifically addresses the maintenance of electrical equipment and systems, providing guidelines to ensure the safe and reliable operation of electrical installations.

NFPA 70B offers comprehensive information on various aspects of maintenance practices including the frequency of maintenance tasks, types of inspections required, and recommended procedures for maintaining electrical equipment. This guidance is essential for reducing the risk of failure and ensuring safety in both residential and commercial electrical systems.

The other standards mentioned focus on different aspects of electrical work, like safety practices and installation requirements, but NFPA 70B specifically emphasizes the importance of ongoing maintenance, which is critical for extending the lifespan of equipment and preventing hazards.