Free NEC Library

Your open access to electrical code standards

Available Code Books

National Electrical Code 2017

NFPA 70

2017 Edition

The 2017 edition of the National Electrical Code (NEC), establishing the foundation for electrical safety in residential, commercial, and industrial occupancies.

National Electrical Code 2023

NFPA 70

2023 Edition

The 2023 edition of the National Electrical Code (NEC), the benchmark for safe electrical design, installation, and inspection.

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