Before revision: The NESC should not be confused with the National Electrical Code (NEC) published by the National Fire Protection Association (NFPA) and intended to be used for residential, commercial, and industrial building wiring.
After revision: , which isThe NESC should not be confused with the National Electrical Code (NEC) published by the National Fire Protection Association (NFPA) and intended to be used for residential, commercial, and industrial building wiring.