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NFPA 70

National Electrical Code

The National Electrical Code (NEC), or NFPA 70 is a set of standards that are used to help electrical professionals install and maintain electrical systems in the United States. It is published by the National Fire Protection Association (NFPA).

The NEC has been adopted by all 50 states. After every three years, new editions are released with updated information and changes made based on industry feedback.