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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

3
Continuous Loads
Ref: 100; 210.19(A); 215.2; 210.20(A) · continuous load, 125 percent, 3 hours

A continuous load is a load where the maximum current is expected to continue for 3 hours or more. Exception/watch: Listed assemblies rated for 100% operation can have...

AFCI Field Reference
Ref: 210.12 · AFCI, 210.12, dwelling, branch circuit

AFCI protection shall be provided for the branch circuits and locations identified by the adopted edition of 210.12. Exception/watch: Check the adopted edition and local...

Voltage Drop Design Reference
Ref: 210.19(A) Informational Note; 215.2 Informational Note · voltage drop, feeder, branch circuit

Voltage drop recommendations appear in informational notes and are design considerations rather than blanket mandatory ampacity requirements. Exception/watch: Sensitive loads...

Dwelling / Device Protection

1
GFCI Field Reference
Ref: 210.8 · GFCI, 210.8, receptacle, dwelling

GFCI protection shall be provided in the locations and for the outlets/equipment covered by the adopted edition of 210.8. Exception/watch: Specific listed exceptions and...

Chapter 2 - Wiring and Protection

3
Article 200 - Use and Identification of Grounded Conductors
Chapter 2 - Wiring and Protection · Branch Circuits / Conductors

Grounded conductor identification, white/gray rules, and neutral conductor field identification issues.

Keywords: neutral, grounded conductor, white wire, gray wire, identification

Related: 210, 215, 250

Article 210 - Branch Circuits
Chapter 2 - Wiring and Protection · Branch Circuits

Core branch-circuit rules for outlets, receptacles, required circuits, GFCI/AFCI references, and dwelling/commercial branch work.

Keywords: branch circuit, receptacle, GFCI, AFCI, small appliance, laundry, bathroom, garage, 210.8, 210.12, 210.52

Related: 220, 250, 406

Article 220 - Branch-Circuit, Feeder, and Service Load Calculations
Chapter 2 - Wiring and Protection · Calculations

Load calculations for dwellings, commercial spaces, feeders, and services.

Keywords: load calculation, service calculation, dwelling, demand factor, commercial load

Related: 210, 215, 230

Chapter 4 - Equipment for General Use

3
Article 406 - Receptacles, Cord Connectors, and Attachment Plugs
Chapter 4 - Equipment for General Use · Devices

Receptacle ratings, replacement rules, tamper resistance, weather resistance, grounding-type devices, and device applications.

Keywords: receptacle, outlet, NEMA, tamper resistant, weather resistant, WR, TR

Related: 210, 250, 422

Article 422 - Appliances
Chapter 4 - Equipment for General Use · Appliances

Appliance branch circuits, disconnecting means, nameplate ratings, and appliance installation references.

Keywords: appliance, dishwasher, water heater, disconnect

Related: 210, 422, 440

Article 424 - Fixed Electric Space-Heating Equipment
Chapter 4 - Equipment for General Use · Heating

Baseboard, space heat, and fixed heating equipment circuits/controls.

Keywords: baseboard heat, space heater, electric heat

Related: 210, 422

Chapter 6 - Special Equipment

1
Article 625 - Electric Vehicle Power Transfer System
Chapter 6 - Special Equipment · EV Charging

EV charging equipment, branch circuits, load management, GFCI references, and installation rules.

Keywords: EV, EVSE, charger, electric vehicle

Related: 210, 220, 250