What is the NEC (National Electrical Code) and what is its purpose?

The NEC (NFPA 70) is the primary electrical safety standard in the United States, adopted by most jurisdictions as law. It establishes minimum requirements for safe electrical installations to protect people and property from electrical hazards including fire and shock. The NEC covers wiring methods, equipment installation, grounding, and specific applications. It is updated every three years to incorporate new technologies and safety findings.