NFPA 70, National Electrical Code (NEC) 2020

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NFPA 70, National Electrical Code (NEC)

Published By	Publication Date	Number of Pages
NFPA	2020	1448

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PDF Catalog

PDF Pages	PDF Title
1	Copyright Edition Origin and Development
2	Committee Lists for NEC-70-2020
46	ARTICLE 90 Introduction
52	Chapter 1 General ARTICLE 100 Definitions
88	ARTICLE 110 Requirements for Electrical Installations
109	Chapter 2 Wiring and Protection ARTICLE 200
114	ARTICLE 210 Branch Circuits
136	ARTICLE 215 Feeders
140	ARTICLE 220 Branch-Circuit, Feeder, and Service Load Calculations
156	ARTICLE 225 Outside Branch Circuits and Feeders
168	ARTICLE 230 Services
189	ARTICLE 240 Overcurrent Protection
215	ARTICLE 250 Grounding and Bonding
271	Chapter 3 Wiring Methods and Materials ARTICLE 300 General Requirements for Wiring Methods and Materials
292	ARTICLE 310 Conductors for General Wiring
313	ARTICLE 311 Medium Voltage Conductors and Cable
336	ARTICLE 312 Cabinets, Cutout Boxes, and Meter Socket Enclosures
342	ARTICLE 314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures
357	ARTICLE 320 Armored Cable: Type AC
360	ARTICLE 322 Flat Cable Assemblies: Type FC
362	ARTICLE 324 Flat Conductor Cable: Type FCC
366	ARTICLE 326 Integrated Gas Spacer Cable: Type IGS
368	ARTICLE 330 Metal-Clad Cable: Type MC
372	ARTICLE 332 Mineral-Insulated, Metal-Sheathed Cable: Type MI
375	ARTICLE 334 Nonmetallic-Sheathed Cable: Types NM and NMC
379	ARTICLE 336 Power and Control Tray Cable: Type TC
382	ARTICLE 337 Type P Cable
383	ARTICLE 338 Service-Entrance Cable: Types SE and USE
386	ARTICLE 340 Underground Feeder and Branch-Circuit Cable: Type UF
388	ARTICLE 342 Intermediate Metal Conduit: Type IMC
391	ARTICLE 344 Rigid Metal Conduit: Type RMC
394	ARTICLE 348 Flexible Metal Conduit: Type FMC
397	ARTICLE 350 Liquidtight Flexible Metal Conduit: Type LFMC
400	ARTICLE 352 Rigid Polyvinyl Chloride Conduit: Type PVC
404	ARTICLE 353 High Density Polyethylene Conduit: Type HDPE Conduit
406	ARTICLE 354 Nonmetallic Underground Conduit with Conductors: Type NUCC
409	ARTICLE 355 Reinforced Thermosetting Resin Conduit: Type RTRC
413	ARTICLE 356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC
416	ARTICLE 358 Electrical Metallic Tubing: Type EMT
419	ARTICLE 360 Flexible Metallic Tubing: Type FMT
421	ARTICLE 362 Electrical Nonmetallic Tubing: Type ENT
424	ARTICLE 366 Auxiliary Gutters
428	ARTICLE 368 Busways
433	ARTICLE 370 Cablebus
436	ARTICLE 372 Cellular Concrete Floor Raceways
437	ARTICLE 374 Cellular Metal Floor Raceways
439	ARTICLE 376 Metal Wireways
442	ARTICLE 378 Nonmetallic Wireways
444	ARTICLE 380 Multioutlet Assembly
445	ARTICLE 382 Nonmetallic Extensions
449	ARTICLE 384 Strut-Type Channel Raceway
451	ARTICLE 386 Surface Metal Raceways
453	ARTICLE 388 Surface Nonmetallic Raceways
455	ARTICLE 390 Underfloor Raceways
457	ARTICLE 392 Cable Trays
469	ARTICLE 393 Low-Voltage Suspended Ceiling Power Distribution Systems
473	ARTICLE 394 Concealed Knob-and-Tube Wiring
475	ARTICLE 396 Messenger-Supported Wiring
477	ARTICLE 398 Open Wiring on Insulators
480	ARTICLE 399 Outdoor Overhead Conductors over 1000 Volts
481	Chapter 4 Equipment for General Use ARTICLE 400 Flexible Cords and Flexible Cables
495	ARTICLE 402 Fixture Wires
499	ARTICLE 404 Switches
506	ARTICLE 406 Receptacles, Cord Connectors, and Attachment Plugs (Caps)
516	ARTICLE 408 Switchboards, Switchgear, and Panelboards
523	ARTICLE 409 Industrial Control Panels
527	ARTICLE 410 Luminaires, Lampholders, and Lamps
546	ARTICLE 411 Low-Voltage Lighting
548	ARTICLE 422 Appliances
557	ARTICLE 424 Fixed Electric Space-Heating Equipment
573	ARTICLE 425 Fixed Resistance and Electrode Industrial Process Heating Equipment
581	ARTICLE 426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment
587	ARTICLE 427 Fixed Electric Heating Equipment for Pipelines and Vessels
592	ARTICLE 430 Motors, Motor Circuits, and Controllers
640	ARTICLE 440 Air-Conditioning and Refrigerating Equipment
651	ARTICLE 445 Generators
654	ARTICLE 450 Transformers and Transformer Vaults (Including Secondary Ties)
667	ARTICLE 455 Phase Converters
670	ARTICLE 460 Capacitors
673	ARTICLE 470 Resistors and Reactors
674	ARTICLE 480 Storage Batteries
680	ARTICLE 490 Equipment Over 1000 Volts, Nominal
691	Chapter 5 Special Occupancies ARTICLE 500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2
706	ARTICLE 501 Class I Locations
725	ARTICLE 502 Class II Locations
736	ARTICLE 503 Class III Location
741	ARTICLE 504 Intrinsically Safe Systems
746	ARTICLE 505 Zone 0, 1, and 2 Locations
772	ARTICLE 506 Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings
784	ARTICLE 510 Hazardous (Classified) Locations – Specific ARTICLE 511 Commercial Garages, Repair and Storage
789	ARTICLE 513 Aircraft Hangars
793	ARTICLE 514 Motor Fuel Dispensing Facilities
802	ARTICLE 515 Bulk Storage Plants
806	ARTICLE 516 Spray Application, Dipping, Coating, and Printing Processes Using Flammable or Combustible Materials
829	ARTICLE 517 Health Care Facilities
867	ARTICLE 518 Assembly Occupancies
870	ARTICLE 520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations
885	ARTICLE 522 Control Systems for Permanent Amusement Attractions
893	ARTICLE 530 Motion Picture and Television Studios and Similar Locations
899	ARTICLE 540 Motion Picture Projection Rooms
902	ARTICLE 545 Manufactured Buildings and Relocatable Structures
905	ARTICLE 547 Agricultural Buildings
910	ARTICLE 550 Mobile Homes, Manufactured Homes, and Mobile Home Parks
927	ARTICLE 551 Recreational Vehicles and Recreational Vehicle Parks
950	ARTICLE 552 Park Trailers
968	ARTICLE 555 Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities
977	ARTICLE 590 Temporary Installations
982	Chapter 6 Special Equipment ARTICLE 600 Electric Signs and Outline Lighting
997	ARTICLE 604 Manufactured Wiring Systems
999	ARTICLE 605 Office Furnishings
1001	ARTICLE 610 Cranes and Hoists
1010	ARTICLE 620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts
1030	ARTICLE 625 Electric Vehicle Power Transfer System
1039	ARTICLE 626 Electrified Truck Parking Spaces
1047	ARTICLE 630 Electric Welders
1051	ARTICLE 640 Audio Signal Processing, Amplification, and Reproduction Equipment
1060	ARTICLE 645 Information Technology Equipment
1067	ARTICLE 646 Modular Data Centers
1075	ARTICLE 647 Sensitive Electronic Equipment
1077	ARTICLE 650 Pipe Organs.
1079	ARTICLE 660 X-Ray Equipment
1083	ARTICLE 665 Induction and Dielectric Heating Equipment
1085	ARTICLE 668 Electrolytic Cells
1090	ARTICLE 669 Electroplating
1091	ARTICLE 670 Industrial Machinery
1093	ARTICLE 675 Electrically Driven or Controlled Irrigation Machines
1097	ARTICLE 680 Swimming Pools, Fountains, and Similar Installations
1129	ARTICLE 682 Natural and Artificially Made Bodies of Water
1132	ARTICLE 685 Integrated Electrical Systems
1133	ARTICLE 690 Solar Photovoltaic (PV) Systems
1156	ARTICLE 691 Large-Scale Photovoltaic (PV) Electric Supply Stations
1158	ARTICLE 692 Fuel Cell Systems
1161	ARTICLE 694 Wind Electric Systems
1170	ARTICLE 695 Fire Pumps
1180	Chapter 7 Special Conditions ARTICLE 700 Emergency Systems
1202	ARTICLE 702 Optional Standby Systems
1205	ARTICLE 705 Interconnected Electric Power Production Sources
1221	ARTICLE 708 Critical Operations Power Systems (COPS)
1232	ARTICLE 710 Stand-Alone Systems
1233	ARTICLE 712 Direct Current Microgrids
1237	ARTICLE 720 Circuits and Equipment Operating at Less Than 50 Volts
1238	ARTICLE 725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits
1260	ARTICLE 727 Instrumentation Tray Cable: Type ITC
1262	ARTICLE 728 Fire-Resistive Cable Systems
1263	ARTICLE 750 Energy Management Systems
1265	ARTICLE 760 Fire Alarm Systems
1283	ARTICLE 770 Optical Fiber Cables
1299	Chapter 8 Communications Systems ARTICLE 800 General Requirements for Communications Systems
1317	ARTICLE 805 Communications Circuits
1326	ARTICLE 810 Radio and Television Equipment
1333	ARTICLE 820 Community Antenna Television and Radio Distribution Systems
1339	ARTICLE 830 Network-Powered Broadband Communications Systems
1348	ARTICLE 840 Premises-Powered Broadband Communications Systems
1354	Chapter 9 Tables Table 1 Percent of Cross Section of Conduit and Tubing for Conductors and Cables
1355	Table 2 Radius of Conduit and Tubing Bends Table 4 Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9)
1360	Table 5 Dimensions of Insulated Conductors and Fixture Wires
1363	Table 5A Compact Copper and Aluminum Building Wire Nominal Dimensions** and Areas
1364	Table 8 Conductor Properties
1365	Table 9 Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F) — Three Single Conductors in
1367	Table 10 Conductor Stranding Table 11(A) and Table 11(B)
1369	Table 12(A) and Table 12(B)
1370	Informative Annex A: Product Safety Standards
1378	Informative Annex B: Application Information for Ampacity Calculation B.1 Equation Application Information. B.2 Typical Applications Covered by Tables.
1379	B.3 Criteria Modifications. B.4 Electrical Ducts. B.5 Table B.2(6) and Table B.2(7). B.6 Electrical Ducts Used in Figure B.2(1).
1380	B.7 Examples Showing Use of Figure B.3 for Electrical Duct Bank Ampacity Modifications.
1386	Example 1
1387	Example 2 Figure B.2(1) Cable Installation Dimensions for Use with Table B.2(5) Through Table B.2(10).
1388	Figure B.2(2) Ampacities of Single Insulated Conductors Rated 0 Through 5000 Volts in Underground Electrical Ducts (Three Conduc
1390	Figure B.2(3) Ampacities of Single Insulated Conductors Rated 0 Through 5000 Volts in Nonmagnetic Underground Electrical Ducts (
1391	Figure B.2(4) Ampacities of Single Insulated Conductors Rated 0 Through 5000 Volts in Nonmagnetic Underground Electrical Ducts (
1392	Figure B.3 Interpolation Chart for Cables in a Duct Bank.
1393	Informative Annex C: Conduit, Tubing, and Cable Tray Fill Tables for Conductors and Fixture Wires of the Same Size
1394	Informative Annex D: Examples
1423	Informative Annex E: Types of Construction
1426	Informative Annex F: Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performan
1429	Informative Annex G: Supervisory Control and Data Acquisition (SCADA)
1431	Informative Annex H: Administration and Enforcement
1442	Informative Annex I: Recommended Tightening Torque Tables from UL Standard 486A-486B
1443	Informative Annex J: ADA Standards for Accessible Design