What code governs the electrical systems in residential and commercial buildings?

The National Electrical Code (NEC Code) is the standard that governs the electrical systems in residential and commercial buildings. It provides guidelines for safe installation, maintenance, and operation of electrical systems, ensuring consistency and safety across various types of electrical work. The NEC is updated regularly to reflect current practices and technological advancements, making it an essential reference for contractors and electricians.

This code covers a wide array of topics, including wiring methods, grounding, protection from electrical hazards, and requirements for electrical materials and equipment. Compliance with the NEC is critical as it helps prevent electrical fires and accidents, thereby enhancing the safety of electrical installations in any building.

The other codes mentioned serve different purposes: the BOCA Code pertains mainly to building standards, the IBC Code focuses on overall building construction and safety standards not specific to electrical work, and the ADA Code addresses accessibility and design standards for individuals with disabilities. Each of these codes plays an important role in their respective areas, but the NEC is distinctly recognized as the authoritative source for electrical systems.