2020 NEC Code Reference

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

Copyright-safe operating rule

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.

81 indexed itemsLocal notes enabledFull text not stored

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.

Open Full Quick Card Library Legacy Common Cards

Chapter 2 - Wiring and Protection

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...

Open Full Card Code Tab

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...

Open Full Card Code Tab

Chapter 2 - Wiring and Protection

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

Open Article Card Filter

Article 215 - Feeders

Chapter 2 - Wiring and Protection · Feeders

Feeder sizing, ratings, voltage drop informational notes, and feeder identification in service/subpanel work.

Keywords: feeder, subpanel, ampacity, voltage drop, neutral

Related: 220, 225, 230, 250

Open Article Card Filter

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

Open Article Card Filter

Article 225 - Outside Branch Circuits and Feeders

Chapter 2 - Wiring and Protection · Feeders / Exterior

Outside feeders/branch circuits, building disconnect rules, and detached structure feeds.

Keywords: detached garage, outside feeder, building disconnect, overhead, underground

Related: 215, 230, 250

Open Article Card Filter