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CONTENTS
1 – NFPA Introduction
2 – NFPA 70 Introduction
2.1 – What is NFPA 70?
2.2 – What does NFPA 70 address?
3 – NFPA 70 Table of Contents
4 – NFPA Free Access to Codes & Standards Widget
5 – NFPA Contact Information
The National Fire Protection Association (NFPA) is a United States trade association, albeit with some international members, that creates and maintains private, copyrighted, standards and codes for usage and adoption by local governments. This includes publications from building codes to the many on equipment utilized by firefighters while engaging in hazardous material (hazmat) response, rescue response, and some firefighting.
National Electrical Code
NFPA® 70 – 2014 Edition
What is NFPA 70?
Adopted in all 50 states, the NEC is the benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards.
What does NFPA 70 address?
The NEC addresses the installation of electrical conductors, equipment, and raceways; signaling and communications conductors, equipment, and raceways; and optical fiber cables and raceways in commercial, residential, and industrial occupancies.
Table of Contents
90 Introduction
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 B Application 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
NFPA 70 page at NFPA: http://catalog.nfpa.org/NFPA-70-National-Electrical-Code-NEC-2014-Edition-P1194.aspx
Relevent parts of this standard are explained in AEABoats’ Do-It-Yourself Inspections articles,
DIY Refitting and Repair articles, Havórn Marine Survey and Shipwright School courses, and Anchors Aweigh Academy‘s online Marine Surveying Course.
Even though NFPA owns those copyrights, they have offered free access to all of their codes and standards on their web site for more than 10 years through a read-only site. Documents cannot be downloaded or printed, because they rely on the revenues from people who want to own their own copies to fund the mission of NFPA. But for users who need to familiarize themselves with a code or check a requirement, this kind of access is invaluable. CLICK the above NFPA Logo for free access to all NFPA Codes and Standards.
If you would like to ADD the NFPA FREE ACCESS Widget like the one above to your website, CLICK HERE to go to the “NFPA FREE ACCESS WIDGET” webpage and follow the directions.
Contact Information
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02169-7471, USA
Telephone: (617) 770-3000
Fax Line: (617) 770-0700
Call Toll-Free from Mexico: 95-800-844-6058
Webesite: www.nfpa.org
Contact Info: www.nfpa.org/about-nfpa/contact-us