---
aliases:
  - nec
  - natiional-electric-code
tags:
  - authorship/other
  - destiny/permanent/entry-point
  - topic/construction/electrical
  - type/media/reference
  - exclude-from-word-count
title: "NFPA 70: National Electric Code"
---
# NFPA 70: National Electric Code

* [[nfpa-70_090|90 Introduction]]

## Chapter 1 General

* [[nfpa-70_100_definitions|100 Definitions]]
* [[nfpa-70_110_requirements|110 Requirements for Electrical Installations]]

## Chapter 2 Wiring and Protection

* [[nfpa-70_200_grounded-conductors|200 Use and Identification of Grounded Conductors]]
* [[nfpa-70_210_branch-circuits|210 Branch Circuits]]
* [[nfpa-70_215_feeders|215 Feeders]]
* [[nfpa-70_220_load-calculations|220 Branch-Circuit, Feeder, and Service Load Calculations]]
* [[nfpa-70_225|225 Outside Branch Circuits and Feeders]]
* [[nfpa-70_230_services|230 Services]]
* [[nfpa-70_240_overcurrent-protection|240 Overcurrent Protection]]
* [[nfpa-70_242|242 Overvoltage Protection]]
* [[nfpa-70_250_grounding|250 Grounding and Bonding]]

## Chapter 3 Wiring Methods and Materials

* [[nfpa-70_300_general-requirements|300 General Requirements for Wiring Methods and Materials]]
* [[nfpa-70_310_conductors_for_general_wiring|310 Conductors for General Wiring]]
* [[nfpa-70_311_mv-conductors|311 Medium Voltage Conductors and Cable]]
* [[nfpa-70_312_cabinets|312 Cabinets, Cutout Boxes, and Meter Socket Enclosures]]
* [[nfpa-70_314_boxes|314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures]]
* [[nfpa-70_320_armored-cable|320 Armored Cable: Type AC]]
* [[nfpa-70_322|322 Flat Cable Assemblies: Type FC]]
* [[nfpa-70_324|324 Flat Conductor Cable: Type FCC]]
* [[nfpa-70_326|326 Integrated Gas Spacer Cable: Type IGS]]
* [[nfpa-70_330_mc-cable|330 Metal-Clad Cable: Type MC]]
* [[nfpa-70_332_mi-cable|332 Mineral-Insulated, Metal-Sheathed Cable: Type MI]]
* [[nfpa-70_334_nm-cable|334 Nonmetallic-Sheathed Cable: Types NM and NMC]]
* [[nfpa-70_336|336 Power and Control Tray Cable: Type TC]]
* [[nfpa-70_337|337 Type P Cable]]
* [[nfpa-70_338_se-cable|338 Service-Entrance Cable: Types SE and USE]]
* [[nfpa-70_340|340 Underground Feeder and Branch-Circuit Cable: Type UF]]
* [[nfpa-70_342_imc|342 Intermediate Metal Conduit: Type IMC]]
* [[nfpa-70_344_rmc|344 Rigid Metal Conduit: Type RMC]]
* [[nfpa-70_348_fmc|348 Flexible Metal Conduit: Type FMC]]
* [[nfpa-70_352_lfmc|350 Liquidtight Flexible Metal Conduit: Type LFMC]]
* [[nfpa-70_352_pvc-conduit|352 Rigid Polyvinyl Chloride Conduit: Type PVC]]
* [[nfpa-70_353_hdpe-conduit|353 High Density Polyethylene Conduit: Type HDPE Conduit]]
* [[nfpa-70_354|354 Nonmetallic Underground Conduit with Conductors: Type NUCC]]
* [[nfpa-70_355|355 Reinforced Thermosetting Resin Conduit: Type RTRC]]
* [[nfpa-70_356_lfnc|356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC]]
* [[nfpa-70_358_emt|358 Electrical Metallic Tubing: Type EMT]]
* [[nfpa-70_360_fmt|360 Flexible Metallic Tubing: Type FMT]]
* [[nfpa-70_362_ent|362 Electrical Nonmetallic Tubing: Type ENT]]
* [[nfpa-70_366|366 Auxiliary Gutters]]
* [[nfpa-70_368_busways|368 Busways]]
* [[nfpa-70_370_cablebus|370 Cablebus]]
* [[nfpa-70_372|372 Cellular Concrete Floor Raceways]]
* [[nfpa-70_374|374 Cellular Metal Floor Raceways]]
* [[nfpa-70_376_metal-wireways|376 Metal Wireways]]
* [[nfpa-70_378|378 Nonmetallic Wireways]]
* [[nfpa-70_380|380 Multioutlet Assembly]]
* [[nfpa-70_382|382 Nonmetallic Extensions]]
* [[nfpa-70_384|384 Strut-Type Channel Raceway]]
* [[nfpa-70_386|386 Surface Metal Raceways]]
* [[nfpa-70_388|388 Surface Nonmetallic Raceways]]
* [[nfpa-70_390|390 Underfloor Raceways]]
* [[nfpa-70_392_cable-tray|392 Cable Trays]]
* [[nfpa-70_393|393 Low-Voltage Suspended Ceiling Power Distribution Systems]]
* [[nfpa-70_394|394 Concealed Knob-and-Tube Wiring]]
* [[nfpa-70_396|396 Messenger-Supported Wiring]]
* [[nfpa-70_398|398 Open Wiring on Insulators]]
* [[nfpa-70_399|399 Outdoor Overhead Conductors over 1000 Volts]]

## Chapter 4 Equipment for General Use

* [[nfpa-70_400_flexible-cords|400 Flexible Cords and Flexible Cables]]
* [[nfpa-70_402_fixture-wires|402 Fixture Wires]]
* [[nfpa-70_404_switches|404 Switches]]
* [[nfpa-70_406_receptacles|406 Receptacles, Cord Connectors, and Attachment Plugs (Caps)]]
* [[nfpa-70_408|408 Switchboards, Switchgear, and Panelboards]]
* [[nfpa-70_409|409 Industrial Control Panels]]
* [[nfpa-70_410_luminaires|410 Luminaires, Lampholders, and Lamps]]
* [[nfpa-70_411_low-voltage-lighting|411 Low-Voltage Lighting]]
* [[nfpa-70_422_appliances|422 Appliances]]
* [[nfpa-70_424|424 Fixed Electric Space-Heating Equipment]]
* [[nfpa-70_425|425 Fixed Resistance and Electrode Industrial Process Heating Equipment]]
* [[nfpa-70_426|426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment]]
* [[nfpa-70_427|427 Fixed Electric Heating Equipment for Pipelines and Vessels]]
* [[nfpa-70_430_motors|430 Motors, Motor Circuits, and Controllers]]
* [[nfpa-70_440_hvac-equipment|440 Air-Conditioning and Refrigerating Equipment]]
* [[nfpa-70_445_generators|445 Generators]]
* [[nfpa-70_450_transformers|450 Transformers and Transformer Vaults (Including Secondary Ties)]]
* [[nfpa-70_455|455 Phase Converters]]
* [[nfpa-70_460|460 Capacitors]]
* [[nfpa-70_470|470 Resistors and Reactors]]
* [[nfpa-70_480|480 Storage Batteries]]
* [[nfpa-70_490|490 Equipment Over 1000 Volts, Nominal]]

## Chapter 5 Special Occupancies

* [[nfpa-70_500|500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2]]
* [[nfpa-70_501|501 Class I Locations]]
* [[nfpa-70_502|502 Class II Locations]]
* [[nfpa-70_503|503 Class III Locations]]
* [[nfpa-70_504|504 Intrinsically Safe Systems]]
* [[nfpa-70_505|505 Zone 0, 1, and 2 Locations]]
* [[nfpa-70_506|506 Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings]]
* [[nfpa-70_510|510 Hazardous (Classified) Locations - Specific]]
* [[nfpa-70_511|511 Commercial Garages, Repair and Storage]]
* [[nfpa-70_513|513 Aircraft Hangars]]
* [[nfpa-70_514|514 Motor Fuel Dispensing Facilities]]
* [[nfpa-70_515|515 Bulk Storage Plants]]
* [[nfpa-70_516|516 Spray Application, Dipping, Coating, and Printing Processes Using Flammable or Combustible Materials]]
* [[nfpa-70_517|517 Health Care Facilities]]
* [[nfpa-70_518_assembly-occupancies|518 Assembly Occupancies]]
* [[nfpa-70_520_theaters|520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations]]
* [[nfpa-70_522|522 Control Systems for Permanent Amusement Attractions]]
* [[nfpa-70_525|525 Carnivals, Circuses, Fairs, and Similar Events]]
* [[nfpa-70_530|530 Motion Picture and Television Studios and Similar Locations]]
* [[nfpa-70_540|540 Motion Picture Projection Rooms]]
* [[nfpa-70_545|545 Manufactured Buildings and Relocatable Structures]]
* [[nfpa-70_547|547 Agricultural Buildings]]
* [[nfpa-70_550|550 Mobile Homes, Manufactured Homes, and Mobile Home Parks]]
* [[nfpa-70_551|551 Recreational Vehicles and Recreational Vehicle Parks]]
* [[nfpa-70_552|552 Park Trailers]]
* [[nfpa-70_555|555 Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities]]
* [[nfpa-70_590_temporary-installations|590 Temporary Installations]]

## Chapter 6 Special Equipment

* [[nfpa-70_600|600 Electric Signs and Outline Lighting]]
* [[nfpa-70_604|604 Manufactured Wiring Systems]]
* [[nfpa-70_605|605 Office Furnishings]]
* [[nfpa-70_610|610 Cranes and Hoists]]
* [[nfpa-70_620|620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts]]
* [[nfpa-70_625|625 Electric Vehicle Charging System]]
* [[nfpa-70_626|626 Electrified Truck Parking Spaces]]
* [[nfpa-70_630|630 Electric Welders]]
* [[nfpa-70_640|640 Audio Signal Processing, Amplification, and Reproduction Equipment]]
* [[nfpa-70_645|645 Information Technology Equipment]]
* [[nfpa-70_646|646 Modular Data Centers]]
* [[nfpa-70_647|647 Sensitive Electronic Equipment]]
* [[nfpa-70_650|650 Pipe Organs]]
* [[nfpa-70_660|660 X-Ray Equipment]]
* [[nfpa-70_665|665 Induction and Dielectric Heating Equipment]]
* [[nfpa-70_668|668 Electrolytic Cells]]
* [[nfpa-70_669|669 Electroplating]]
* [[nfpa-70_670|670 Industrial Machinery]]
* [[nfpa-70_675|675 Electrically Driven or Controlled Irrigation Machines]]
* [[nfpa-70_680|680 Swimming Pools, Fountains, and Similar Installations]]
* [[nfpa-70_682|682 Natural and Artificially Made Bodies of Water]]
* [[nfpa-70_685|685 Integrated Electrical Systems]]
* [[nfpa-70_690|690 Solar Photovoltaic (PV) Systems]]
* [[nfpa-70_691|691 Large-Scale Photovoltaic (PV) Electric Supply Stations]]
* [[nfpa-70_692|692 Fuel Cell Systems]]
* [[nfpa-70_694|694 Wind Electric Systems]]
* [[nfpa-70_695_fire-pumps|695 Fire Pumps]]

## Chapter 7 Special Conditions

* [[nfpa-70_700_emergency-systems|700 Emergency Systems]]
* [[nfpa-70_701|701 Legally Required Standby Systems]]
* [[nfpa-70_702|702 Optional Standby Systems]]
* [[nfpa-70_705|705 Interconnected Electric Power Production Sources]]
* [[nfpa-70_706|706 Energy Storage Systems]]
* [[nfpa-70_708|708 Critical Operations Power Systems (COPS)]]
* [[nfpa-70_710|710 Stand-Alone Systems]]
* [[nfpa-70_712|712 Direct Current Microgrids]]
* [[nfpa-70_720|720 Circuits and Equipment Operating at Less Than 50 Volts]]
* [[nfpa-70_725_control-circuits|725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits]]
* [[nfpa-70_727|727 Instrumentation Tray Cable: Type ITC]]
* [[nfpa-70_728|728 Fire-Resistive Cable Systems]]
* [[nfpa-70_750|750 Energy Management Systems]]
* [[nfpa-70_760|760 Fire Alarm Systems]]
* [[nfpa-70_770|770 Optical Fiber Cables]]

## Chapter 8 Communications Systems

* [[nfpa-70_800|800 General Requirements for Communications Systems]]
* [[nfpa-70_805|805 Communications Circuits]]
* [[nfpa-70_810|810 Radio and Television Equipment]]
* [[nfpa-70_820|820 Community Antenna Television and Radio Distribution Systems]]
* [[nfpa-70_830|830 Network-Powered Broadband Communications Systems]]
* [[nfpa-70_840|840 Premises-Powered Broadband Communications Systems]]

***

* [[nfpa-70_ch09|Chapter 9 Tables]]

* [[nfpa-70_anx-a|Annex A: Product Safety Standards]]
* [[nfpa-70_anx-b|Annex B: Application Information for Ampacity Calculation]]
* [[nfpa-70_anx-c|Annex C: Conduit, Tubing, and Cable Tray Fill Tables for Conductors and Fixture Wires of the Same Size]]
* [[nfpa-70_anx-d|Annex D: Examples]]
* [[nfpa-70_anx-e|Annex E: Types of Construction]]
* [[nfpa-70_anx-f|Annex F: Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems]]
* [[nfpa-70_anx-g|Annex G: Supervisory Control and Data Acquisition (SCADA)]]
* [[nfpa-70_anx-h|Annex H: Administration and Enforcement]]
* [[nfpa-70_anx-i|Annex I: Recommended Tightening Torque Tables from UL Standard 486A-486B]]
* [[nfpa-70_anx-j|Annex J: ADA Standards for Accessible Design]]
