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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Code Quick Cards

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.

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Chapter 2 - Wiring and Protection

1
Circuit Directories / Identification
Ref: 408.4(A) · panel, directory, circuit identification

Every circuit and circuit modification shall be legibly identified as to its clear, evident, and specific purpose or use. Exception/watch: Existing directories should be...

Chapter 2 - Wiring and Protection

2
Article 230 - Services
Chapter 2 - Wiring and Protection · Services

Service conductors, service disconnecting means, service equipment, service entrance rules, and common utility/service work references.

Keywords: service, service disconnect, service equipment, meter, service entrance, 230.71

Related: 225, 250, 408

Article 240 - Overcurrent Protection
Chapter 2 - Wiring and Protection · OCPD

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

Chapter 3 - Wiring Methods and Materials

1
Article 312 - Cabinets, Cutout Boxes, and Meter Socket Enclosures
Chapter 3 - Wiring Methods and Materials · Enclosures

Cabinets and enclosures including wire bending and conductor space concerns.

Keywords: cabinet, enclosure, meter socket, wire bending

Related: 314, 408

Chapter 4 - Equipment for General Use

1
Article 408 - Switchboards, Switchgear, and Panelboards
Chapter 4 - Equipment for General Use · Panels / Gear

Panelboards, switchboards, switchgear, circuit directories, unused openings, and panel equipment rules.

Keywords: panelboard, switchgear, switchboard, directory, breaker, unused opening

Related: 110, 230, 240