What does the National Electric Code (NEC) pertain to?

The National Electric Code (NEC) is primarily focused on electrical wiring standards. It provides guidelines and regulations to ensure safe electrical installations and practices. The NEC covers various aspects of electrical systems, including wiring methods, grounding, overcurrent protection, and equipment installation. By establishing these standards, the NEC helps prevent electrical hazards such as fires, shock, and other injuries related to improper electrical work.

Fire alarm systems, while they do involve electrical components, are covered under different codes and specific guidelines separate from the NEC. Mechanical systems and construction safety codes also pertain to different aspects of building and construction practices, which do not fall under the NEC's purview. Thus, the focus of the NEC on electrical wiring standards is vital for ensuring safety and compliance in electrical system installations.