NFPA 70: National Electrical Code (NEC), Prior Years

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2014 NFPA 70 Current Edition & Handbook


NFPA 70®: National Electrical Code® (NEC®) is the basis for electrical safety that has saved countless lives.

Adopted in all 50 states, the NEC helps protect people and property from electrical hazards involving wiring and equipment. Comprehensive provisions address electrical installations in virtually all buildings -- including commercial, residential, and industrial occupancies. Revisions to the NEC are industry-driven, based on public proposals and comments. Each editio n of the Code builds on the next, through consensus-based changes that reflect the evolving needs of the field, emerging technologies, and new information about electrical safety.

  • The 2011 NFPA 70: National Electrical Code advances to meet the increasing consumer demand for alternate energy, green technologies, and IT equipment. New Article 694 presents requirements for small wind electric systems and new Article 840 addresses the increased demand for broadband communications systems with requirements for wireless, routers, and wireless disconnects. Other changes include revised Article 625 with updates on safe battery charging for plug-in hybrid vehicles; and revised Article 705 with guidance on interconnecting generators, windmills, and solar and fuel cells with other power supplies.
  • The 2008 NFPA 70: National Electrical Code works to improve public safety, emergency preparedness, Code usability, and worker protection. New Article 708 covering Critical Operations Power Systems (COPS) presents provisions for electrical security in public and private facilities that must stay online during a crisis, such as public safety dispatch centers and hospital ICUs. Because arcing faults on wiring systems and extension cords can cause home fires, the 2008 NEC expands AFCI use to living areas. New rules for tamper-resistant receptacles respond to the CPSC's National Electronic Injury Surveillance System (NEISS) reports that thousands of children are treated in hospitals every year for burns received as a result of inserting objects into receptacles.
  • The 2005 NFPA 70: National Electrical Code expands requirements for ground-fault circuit-interrupters (GFCI) to help ensure the use of these potentially life-saving devices in homes, businesses, and public spaces. New Article 409 introduces rules for industrial control panels, new Article 506 presents a zone hazardous area classification system for combustible dusts and ignitible fibers and flyings, and new Article 682 covers natural and artificially made bodies of water not classified as swimming pools or fountains. In addition, new Article 353 is added for installations using HDPE conduit.
  • The 2002 NFPA 70: National Electrical Code adds provisions for installing surge-protective devices in new Article 285. Other key revisions in this edition include a one-stop Article 406 that improves user efficiency when handling receptacles, cord connectors, and attachment plugs; Article 692 with access rules covering fuel cell systems; and a parallel numbering systems for Raceway and Cable Articles in Chapter 3: Wiring.
  • The 1999 NFPA 70: National Electrical Code introduces new Article 490 with general guidelines for high-voltage installations, and new Article 830 with added NEC requirements impacting telecommunications installations. In addition to numerous technical changes, it's also the first NEC Codebook printed in an 8 1/2 x 11-inch size with more legible type and expanded tables.

Interested in other editions of the NEC? Use the drop down menu above to select the edition year you need.

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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.

  • Changed sections are marked with a vertical rule.
  • Deleted material is shown in red strikethrough type.
  • New material appears in blue underscored type.


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.

NEC® Tabs for the NEC Code or NEC Handbook make referencing fast and easy!

Self-adhesive NEC Tabs affix to your NFPA 70®: National Electrical Code® or NEC Handbook, so you can flip open your book to the latest electrical safety information and maximize time on the job.  Tabs highlight electrical topics by Code article and name.

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Discover why thousands of electrical professionals won't work without them. (For use with the NEC Softbound, Looseleaf, and Hardbound NEC Handbook. Tabs are available for the 2002, 2005, 2008 and 2011 editions on this page.)