Protect those around you and help build a safer world with the 2017 NFPA 70: National Electrical Code! The NEC is the benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards.
Revisions in the 2017 are easily identified - gray shading indicates technical changes, an "N" icon flags new Articles, text, tables and figures. Bullets show where paragraphs were deleted.
The 2017 NEC includes the latest comprehensive regulations for wiring, overcurrent protection, grounding, and installation. Hundreds of updates and five all-new Articles pave the way to safer, more efficient electrical installations.
Five first-time Articles include Energy Storage Systems (Article 706) and Direct Current Microgrids (Article 712).
New detailed labeling for arc flash hazard warning on equipment protects workers.
Revised provisions for AFCI and GFCI protection and other changes help improve electrical and fire safety.
- Minor Bug Fix