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Many new and revised requirements in the 2014 NEC® impact residential, commercial, and industrial electrical installations.
The 2014 NFPA 70®: NEC® covers the latest requirements on electrical wiring and equipment installation issues, including minimum provisions for the use of connections, voltage markings, conductors, and cables. Chapters address specific circumstances surrounding special occupancies and industrial equipment and machines. It also contains specific details on the safe installation and use of communications and signaling conductors.
All requirements in the National Electrical Code® are confirmed through a rigorous process of comprehensive review, markup, annotation and revision. The NEC has been published since 1897, and in that time the code and its accompanying National Electrical Code Handbook have undergone radical restructuring to reflect the latest electrical and wiring technologies.
The 2014 edition of the NEC has been revised to include important changes such as:
Stay ahead with the 2014 NEC's safety updates and time-tested, trusted guidance.
Electrical hazards result in many thousands of accidents in residences and commercial spaces each year. NFPA 70: National Electrical Code is the nation's singular code for safe electrical installation. Over its 100+ years of publication, the NEC has become the most trusted electrical standard throughout much of the world, lending considerable weight to its authoritative collection of code requirements. As time moves forward, so does the NEC.The 2014 edition added four all-new Articles on growing technologies such as:
The NEC 70 provides the most comprehensive set of rules for all types of electrical wiring and equipment.
The Code's charter is broad, covering electrical conductors, equipment, and raceways for a wide array of spaces and premises. This includes all public and private buildings, homes, and structures; outdoor yards and lots; installations that connect to the power grid; and utility equipment. Major changes in the NEC also respond to electrical safety concerns with respect to NFPA 70E®: Standard for Electrical Safety in the Workplace®, such as new centralized locking requirements, field marking of equipment, and hazard warning labels.
Get up-to-code with the new 2014 National Electrical Code from NFPA!
NFPA 70 is the foundation of all electrical wiring and practice in the United States, and going without the latest edition creates a needless risk. Protect lives and property from electrical dangers and buy the 2014 National Electrical Code today. (Softbound, 910 pp., 2014)
NFPA 70® National Electrical Code (NEC)® 2014 Edition
Chapter 1 General 100 Definitions 110 Requirements for Electrical Installations
Chapter 2 Wiring and Protection 200 Use and Identification of Grounded Conductors 210 Branch Circuits 215 Feeders 220 Branch-Circuit, Feeder, and Service Calculations 225 Outside Branch Circuits and Feeders 230 Services 240 Overcurrent Protection 250 Grounding and Bonding 280 Surge Arresters, Over 1000 Volts 285 Surge-Protective Devices (SPDs), 1000 Volts or Less
Chapter 3 Wiring Methods and Materials 300 General Requirements for Wiring Methods and Materials 310 Conductors for General Wiring 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 328 Medium Voltage Cable: Type MV 330 Metal-Clad Cable: Type MC 332 Mineral-Insulated, Metal-Sheathed Cable: Type MI 334 Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS 336 Power and Control Tray Cable: Type TC 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
Chapter 4 Equipment for General Use 400 Flexible Cords and 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 Lighting Systems Operating at 30 Volts or Less and Lighting Equipment Connected to Class-2 Power Sources 422 Appliances 424 Fixed Electric Space-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
Chapter 5 Special Occupancies 500 Hazardous (Classified) Locations, Classes I, II, and 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) Locations - Specific 511 Commercial Garages, Repair and Storage 513 Aircraft Hangars 514 Motor Fuel Dispensing Facilities 515 Bulk Storage Plants 516 Spray Application, Dipping, Coating, and Printing Processes Using Flammable Combustible Materials 517 Health Care Facilities 518 Assembly Occupancies 520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations 522 Control Systems for Permanent Amusement Attractions 525 Carnivals, Circuses, Fairs, and Similar Events 530 Motion Picture and Television Studios and Similar Locations 540 Motion Picture Projection Rooms 545 Manufactured Buildings 547 Agricultural Buildings 550 Mobile Homes, Manufactured Homes, and Mobile Home Parks 551 Recreational Vehicles and Recreational Vehicle Parks 552 Park Trailers 553 Floating Buildings 555 Marinas and Boatyards 590 Temporary Installations
Chapter 6 Special Equipment 600 Electric Signs and Outline Lighting 604 Manufactured Wiring Systems 605 Office Furnishings 610 Cranes and Hoists 620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts 625 Electric Vehicle Charging System 626 Electrified Truck Parking Spaces 630 Electric Welders 640 Audio Signal Processing, Amplification, and Reproduction Equipment 645 Information Technology Equipment 646 Modular Data Centers 647 Sensitive Electronic Equipment 650 Pipe Organs 660 X-Ray Equipment 665 Induction and Dielectric Heating Equipment 668 Electrolytic Cells 669 Electroplating 670 Industrial Machinery 675 Electrically Driven or Controlled Irrigation Machines 680 Swimming Pools, Fountains, and Similar Installations 682 Natural and Artificially Made Bodies of Water 685 Integrated Electrical Systems 690 Solar Photovoltaic (PV) Systems 692 Fuel Cell Systems 694 Wind Electric Systems 695 Fire Pumps
Chapter 7 Special Conditions 700 Emergency Systems 701 Legally Required Standby Systems 702 Optional Standby Systems 705 Interconnected Electric Power Production Sources 708 Critical Operations Power Systems (COPS) 720 Circuits and Equipment Operating at Less Than 50 Volts 725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits 727 Instrumentation Tray Cable: Type ITC 728 Fire-Resistive Cable Systems 750 Energy Management Systems 760 Fire Alarm Systems 770 Optical Fiber Cables and Raceways
Chapter 8 Communications Systems 800 Communications Circuits 810 Radio and Television Equipment 820 Community Antenna Television and Radio Distribution Systems 830 Network-Powered Broadband Communications Systems 840 Premises-Powered Broadband Communications Systems
Chapter 9 Tables Informative Annex A Product Safety Standards Informative Annex BApplication Information for Ampacity Calculation Informative Annex C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size Informative Annex D Examples Informative Annex E Types of Construction Informative Annex F Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems Informative Annex G Supervisory Control and Data Acquisition (SCADA) Informative Annex H Administration and Enforcement Informative Annex I Recommended Tightening Torque Tables from UL Standard 486A-B Informative Annex J ADA Standards for Accessible Design Index
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NFPA®'s Redline PDF contains both the current NFPA document and a Redline version of the document which shows changes from the previous edition marked in color. With the Redline you can quickly spot changed sections and tell specifically what has been changed from the previous edition, saving time and confusion.
Sample (NEC® 2014)
411.2411.3 Definition. Low-Voltage Lighting Systems.
(A) General. Lighting Ssystems Ooperating at 30 Volts- volts or Less. A lighting system consisting less shall consist of an isolating power supply, the low-voltage luminaires, and associated equipment that are all identified for the use. The output circuits of the power supply are shall be rated for not more than 25 amperes and operate at 30 volts (42.4 volts peak) or lessmaximum under all load conditions.
(B) Class 2. Listed Class 2 lighting equipment shall be rated in conformance with Chapter 9, Table 11(A) or Table 11(B).
411.3411.4 Listing Required. Lighting systems operating at 30 volts or less shall comply with 411.3(A)411.4(A) or
411.3(B).411.4(B). Class 2 power sources and lighting equipment connected to Class 2 power sources shall be llisted.