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| List of Tables | |
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| Preface | |
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| 80 - Administration and Enforcement | |
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| 90 - Introduction | |
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| General | |
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| 100 - Definitions | |
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| 110 - Requirements for Electrical Installations | |
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| Wiring and Protection | |
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| 200 - Use and Identification of Grounded Conductors | |
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| 210 - Branch Circuits | |
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| 215 - Feeders | |
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| 220 - Branch-Circuit, Feeder, and Service Calculations | |
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| 225 - Outside Branch Circuits and Feeders | |
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| 230 - Services | |
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| 240 - Overcurrent Protection | |
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| 250 - Grounding | |
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| 280 - Surge Arresters | |
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| 285 - Transient Voltage Surge Supressors (TVSS) | |
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| Wiring Methods and Materials | |
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| 300 - Wiring Methods | |
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| 310 - Conductors for General Wiring | |
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| 312 - Cabinets, Cutout Boxes, and Meter Socket Enclosures | |
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| 314 - Outet, Device, Pull and Junction Boxes; Conduit Bodies; Fittings; and Manholes | |
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| 320 - Armored Cable: Type AC | |
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| 322 - Flat Cable Assemblies: Type FC | |
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| 324 - Flat Conductor Cable: Type FCC | |
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| 326 - Integrated Gas Spacer Cable: Type IGS | |
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| 328 - Medium Voltage Cable: Type MV | |
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| 330 - Metal-Clad Cable: Type MC | |
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| 332 - Mineral-Insulated, Metal-Sheathed Cable: Type MI | |
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| 334 - Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS | |
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| 336 - Power and Control Tray Cable: Type TC | |
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| 338 - Service-Entrance Cable: Types SE and USE | |
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| 340 - Underground Feeder and Branch-Circuit Cable: Type UF | |
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| 342 - Intermediate Metal Conduit: IMC | |
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| 344 - Rigid Metal Conduit: Type RMC | |
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| 348 - Flexible Metal Conduit: Type FMC | |
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| 350 - Liquidtight Flexible Metal Conduit: Type LFMC | |
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| 352 - Rigid Nonmetallic Conduit: Type RNC | |
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| 354 - Nonmetallic Underground Conduit with Conductors: Type NUCC | |
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| 356 - Liquidtight Flexible Nonmetallic Conduit: Type LFNC | |
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| 358 - Electric Metallic Tubing: Type EMT | |
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| 360 - Flexible Metallic Tubing: Type FMT | |
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| 362 - Electrical Nonmetallic Tubing: Type ENT | |
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| 366 - Auxilliary Gutters | |
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| 368 - Busways | |
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| 370 - Cablebus | |
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| 372 - Cellular Concrete Floor Raceways | |
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| 374 - Cellular Metal Floor Raceways | |
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| 376 - Metal Wireways | |
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| 378 - Nonmetallic Wireways | |
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| 380 - Multioutlet Assembly | |
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| 382 - Nonmetallic Extensions | |
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| 384 - Strut-Type Channel Raceway | |
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| 386 - Surface Metal Raceways | |
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| 388 - Surface Nonmetallic Raceways | |
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| 390 - Underfloor Raceways | |
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| 392 - Cable Trays | |
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| 394 - Concealed Knob-and-Tube Wiring | |
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| 396 - Messenger Supported Wiring | |
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| 398 - Open Wiring on Insulators | |
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| Equipment for General Use | |
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| 400 - Flexible Cords and Cables | |
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| 402 - Fixture Wires | |
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| 404 - Switches | |
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| 406 - Receptacles, Cord Connectors, and Attachment Plugs (Caps) | |
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| 408 - Switchboards and Panelboards | |
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| 410 - Luminaires (Lighting Fixtures), Lampholders, and Lamps | |
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| 411 - Lighting Systems Operating at 30 Volts or Less | |
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| 422 - Appliances | |
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| 424 - Fixed Electric Space Heating Equipment | |
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| 426 - Fixed Outdoor Electric De-icing and Snow-Melting Equipment | |
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| 427 - Fixed Electric Heating Equipment for Pipelines and Vessels | |
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| 430 - Motors, Motor Circuits, and Controllers | |
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| 440 - Air Conditioning and Refrigerating Equipment | |
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| 445 - Generators | |
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| 450 - Transformers and Transformer Vaults (Including Secondary Ties) | |
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| 455 - Phase Converters | |
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| 460 - Capacitors | |
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| 470 - Resistors and Reactors (For Rheostats, See 480.82) | |
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| 480 - Storage Batteries | |
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| 490 - Equipment, over 600 Volts, Nominal | |
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| Special Occupancies | |
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| 500 - Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 | |
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| 501 - Class I Locations | |
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| 502 - Class II Locations | |
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| 503 - Class III Locations | |
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| 504 - Intrinsically Safe Systems | |
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| 505 - Class I, Zone 0, 1, and 2 Locations | |
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| 510 - Hazardous (Classified) Locations--Specific | |
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| 511 - Commercial Garages, Repair and Storage | |
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| 513 - Aircraft Hangars | |
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| 514 - Motor Fuel Dispensing Facilities | |
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| 515 - Bulk Storage Plants | |
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| 516 - Spray Application, Dipping and Coating Processes | |
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| 517 - Health Care Facilities | |
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| 518 - Places of Assembly | |
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| 520 - Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations | |
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| 525 - Carnivals, Circuses, Fairs, and Similar Events | |
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| 527 - Temporary Installations | |
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| 530 - Motion Picture and Television Studios and Similar Locations | |
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| 540 - Motion Picture Projection Rooms | |
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| 545 - Manufactured Buildings | |
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| 547 - Agricultural Buildings | |
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| 550 - Mobile Homes, Manufactured Homes, and Mobile Home Parks | |
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| 551 - Recreational Vehicles and Recreational Vehicle Parks | |
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| 552 - Park Trailers | |
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| 553 - Floating Buildings | |
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| 555 - Marinas and Boatyards | |
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| Special Equipment | |
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| 600 - Electric Signs and Outline Lighting | |
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| 604 - Manufactured Wiring Systems | |
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| 605 - Office Furnishings (Consisting of Lighting Accessories and Wired Partitions) | |
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| 610 - Cranes and Hoists | |
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| 620 - Elevators, Dumbwaiters, Escalators, Moving Walks, Wheel-chair Lifts, and Stairway Chair Lifts | |
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| 625 - Electric Vehicle Charging System | |
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| 630 - Electric Welders | |
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| 640 - Audio Signal Processing, Amplification, and Reproduction Equipment | |
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| 645 - Information Technology Equipment | |
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| 647 - Sensitive Electronic Equipment | |
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| 650 - Pipe Organs | |
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| 660 - X-Ray Equipment | |
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| 665 - Induction and Dielectric Heating Equipment | |
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| 668 - Electrolytic Cells | |
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| 669 - Electroplating | |
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| 670 - Industrial Machinery | |
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| 675 - Electrically Driven or Controlled Irrigation Machines | |
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| 680 - Swimming Pools, Fountains, and Similar Installations | |
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| 685 - Integrated Electrical Systems | |
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| 690 - Solar Photovoltaic Systems | |
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| 692 - Fuel Cell Systems | |
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| 695 - Fire Pumps | |
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| Special Conditions | |
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| 700 - Emergency Systems | |
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| 701 - Legally Required Standby Systems | |
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| 702 - Optional Standby Systems | |
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| 705 - Interconnected Electric Power Production Sources | |
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| 720 - Circuits and Equipment Operating at Less Than 50 Volts | |
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| 725 - Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits | |
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| 727 - Instrumentation Tray Cable--Type ITC | |
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| 760 - Fire Alarm Systems | |
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| 770 - Optical Fiber Cables and Raceways | |
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| 780 - Closed-Loop and Programmed Power Distribution | |
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| Communications Systems | |
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| 800 - Communications Circuits | |
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| 810 - Radio and Television Equipment | |
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| 820 - Community Antenna Television and Radio Distribution Systems | |
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| 830 - Network-Powered Broadband Communications Systems | |
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| Tables | |
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| Tables | |
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| Product Safety Standards | |
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| Formula Application, Information for Ampacities Calculated Under Engineering Supervision | |
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| Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size | |
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| Examples | |
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| Types of Construction | |