GIES OS
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Indexed GIES field reference for article lookup, bookmarks, and local notes. Full NEC text is not bundled.
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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Short GIES field cards are grouped directly in the code tab below. Use the full cards when you need the detailed bullet list, exceptions, and gotchas.
Open Full Quick Card LibraryLegacy Common CardsTransformer secondary conductors shall be protected in accordance with one of the permitted 240.21(C) rule paths. Exception/watch: Outdoor secondary conductors and supervised...
Breaker/fuse protection rules, standard ratings, tap conductors, conductor protection, and equipment protection.
Keywords: breaker, fuse, OCP, overcurrent, tap conductor, 240.4, 240.6
Related: 310, 408, 430
Conductor ampacity, insulation types, temperature ratings, and adjustment/correction references.
Keywords: ampacity, conductor, THHN, THWN, temperature, 310.16, derating
Related: 240, 300, 334
Panelboards, switchboards, switchgear, circuit directories, unused openings, and panel equipment rules.
Keywords: panelboard, switchgear, switchboard, directory, breaker, unused opening
Related: 110, 230, 240
Motor conductor sizing, overloads, short-circuit protection, disconnects, and controller rules.
Keywords: motor, overload, MCC, starter, disconnect, VFD
Related: 240, 440, 460
Transformer installation, ventilation, overcurrent protection, and vault references.
Keywords: transformer, dry type, vault, primary, secondary
Related: 240, 250
Medium-voltage equipment rules and references.
Keywords: medium voltage, over 1000V, MV
Related: 110, 240
Welder circuits, conductor sizing, duty cycle, and OCP references.
Keywords: welder, welding, duty cycle
Related: 240, 310