NFPA 70, known as the National Electrical Code® (NEC), is the primary standard governing safe electrical installation practices. It applies to residential, commercial, and industrial environments and is designed to address evolving electrical hazards, advancing technologies, and current best practices. Updated every three years, the NEC reflects the latest industry developments to ensure ongoing relevance and reliability. Its structured and well-organized format makes it a trusted, user-friendly reference for electricians, engineers, designers, installers, inspectors, and other electrical professionals.