National Electrical Code NEC Practice Test

NEC (National Electrical Code) is a set of safety standards in the United States that governs electrical installations to ensure safe use of electricity in residential, commercial, and industrial buildings. Developed by the National Fire Protection Association (NFPA), the NEC is updated every three years and is widely adopted to prevent electrical hazards such as fires and shocks. It covers everything from wiring methods and materials to grounding and protection requirements.