GIES OS
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2020 NEC Code Reference

Indexed GIES field reference for article lookup, bookmarks, and local notes. Full NEC text is not bundled.

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This section is an index and note layer only. Use your licensed 2020 NFPA 70 / NEC book, NFPA LiNK access, or AHJ-published adopted code source for exact enforceable text. Do not treat this page as the full code.

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Chapter 5 - Special Occupancies

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Article 500 - Hazardous (Classified) Locations
Chapter 5 - Special Occupancies · Hazardous Locations

Hazardous location classification system and general Class/Division/Zone structure.

Keywords: hazardous location, classified, Class I, Division, Zone

Related: 501, 502, 503, 504, 505, 506

Article 502 - Class II Locations
Chapter 5 - Special Occupancies · Hazardous Locations

Combustible dust Class II wiring methods and equipment.

Keywords: Class II, dust, combustible dust

Related: 500, 506