NEC Articles

Chapter 1

General

Chapter 2

Wiring and Protection

Chapter 3

Wiring Methods and Materials

Chapter 4

Equipment for General Use

Chapter 5

Special Occupancies

Chapter 6

Special Equipment

Chapter 7

Special Conditions

Chapter 8

Communications Systems

Chapter 9

Tables

100

Definitions

110

Requirements for Electrical Installations

200

Use and Identification of Grounded Conductors

210

Branch Circuits

215

Feeders

220

Branch-Circuit, Feeder, and Service Load Calculations

225

Outside Branch Circuits and Feeders

230

Services

240

Overcurrent Protection

242

Overvoltage Protection

250

Grounding and Bonding

300

General Requirements for Wiring Methods and Materials

310

Conductors for General Wiring

311

Medium Voltage Conductors and Cable

312

Cabinets, Cutout Boxes and Meter Socket Enclosures

314

Outlet, Device, Pull and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures

320

Armored Cable: Type AC

322

Flat Cable Assemblies: Type FC

324

Flat Conductor Cable: Type FCC

326

Integrated Gas Spacer Cable: Type IGS

330

Metal-Clad Cable: Type MC

332

Mineral-Insulated, Metal-Sheathed Cable: Type MI

334

Nonmetallic-Sheathed Cable: Types NM and NMC

336

Power and Control Tray Cable: Type TC

337

Type P Cable

338

Service-Entrance Cable: Types SE and USE

340

Underground Feeder and Branch-Circuit Cable: Type UF

342

Intermediate Metal Conduit: Type IMC

344

Rigid Metal Conduit: Type RMC

348

Flexible Metal Conduit: Type FMC

350

Liquidtight Flexible Metal Conduit: Type LFMC

352

Rigid Polyvinyl Chloride Conduit: Type PVC

353

High Density Polyethylene Conduit: Type HDPE Conduit

354

Nonmetallic Underground Conduit with Conductors: Type NUCC

355

Reinforced Thermosetting Resin Conduit: Type RTRC

356

Liquidtight Flexible Nonmetallic Conduit: Type LFNC

358

Electrical Metallic Tubing: Type EMT

360

Flexible Metallic Tubing: Type FMT

362

Electrical Nonmetallic Tubing: Type ENT

366

Auxiliary Gutters

368

Busways

370

Cablebus

372

Cellular Concrete Floor Raceways

374

Cellular Metal Floor Raceways

376

Metal Wireways

378

Nonmetallic Wireways

380

Multioutlet Assembly

382

Nonmetallic Extensions

384

Strut-Type Channel Raceway

386

Surface Metal Raceways

388

Surface Nonmetallic Raceways

390

Underfloor Raceways

392

Cable Trays

393

Low-Voltage Suspended Ceiling Power Distribution Systems

394

Concealed Knob-and-Tube Wiring

396

Messenger-Supported Wiring

398

Open Wiring on Insulators

399

Outdoor Overhead Conductors over 1000 Volts

400

Flexible Cords and Flexible Cables

402

Fixture Wires

404

Switches

406

Receptacles, Cord Connectors and Attachment Plugs (Caps)

408

Switchboards, Switchgear, and Panelboards

409

Industrial Control Panels

410

Luminaires, Lampholders, and Lamps

411

Low-Voltage Lighting

422

Appliances

424

Fixed Electric Space-Heating Equipment

425

Fixed Resistance and Electrode Industrial Process Heating Equipment

426

Fixed Outdoor Electric Deicing and Snow-Melting Equipment

427

Fixed Electric Heating Equipment for Pipelines and Vessels

430

Motors, Motor Circuits, and Controllers

440

Air-Conditioning and Refrigerating Equipment

445

Generators

450

Transformers and Transformer Vaults (Including Secondary Ties)

455

Phase Converters

460

Capacitors

470

Resistors and Reactors

480

Storage Batteries

490

Equipment Over 1000 Volts, Nominal

500

Hazardous (Classified) Locations, Classes I, II, III, Divisions 1 and 2

501

Class I Locations

502

Class II Locations

503

Class III Locations

504

Intrinsically Safe Systems

505

Zone 0, 1, and 2 Locations

506

Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings

510

Hazardous (Classified) Locactions - Specific

511

Commercial Garages, Repair and Storage

513

Aircraft Hangars

514

Motor Fuel Dispensing Facilities