--- 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|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]]