What type of electrical installations must comply with NFPA 70?

The correct answer indicates that all electrical installations, systems, and equipment must comply with NFPA 70, which is the National Electrical Code (NEC). This code provides comprehensive guidelines aimed at ensuring safe electrical design, installation, and maintenance practices.

The NFPA 70 applies to a wide range of electrical installations—from residential wiring to industrial setups and public infrastructure. It covers not only high voltage installations but also low voltage systems, making it a crucial standard for safety regardless of the voltage level.

This comprehensive applicability is significant because it ensures that all aspects of electrical work are safeguarded against fire, shock hazards, and other potential risks. Compliance with NFPA 70 is essential for reducing accidents and protecting both people and property from electrical hazards. As a result, adherence to these standards contributes to the overall reliability and safety of electrical systems across various settings.