NEC Analysis of Changes

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  • Description

    Get current with the latest requirements for electrical safety faster and more efficiently with Analysis of Changes, NEC® 2020.

    NFPA 70®, National Electrical Code® (NEC), is the benchmark standard for electrical safety in residential, commercial, and industrial occupancies around the world. Analysis of Changes, NEC 2020, serves as a comprehensive resource that highlights and explains recent revisions to NEC design and installation requirements.

    Co-published by NFPA and the International Association of Electrical Inspectors (IAEI), the new edition features summaries addressing hundreds of the most critical changes in the NEC to help get you up to code in less time.

    Features include:

    • Colorful graphic depictions of revisions to clarify how to apply requirements accurately
    • Direct excerpts from the 2020 edition of the NEC, along with explanatory language of how changes impact you on the job
    • Reference information to help provide a deeper understanding of changes and the rationale behind them

    Analysis of Changes, NEC 2020, covers the edited, expanded, and reorganized NEC content you need to know to help stay safe and compliant.

    NFPA 70, NEC, was significantly revised to provide electrical workers with information reflecting cutting-edge industry practices, emerging trends, and the development and introduction of new technologies.

    Analysis of Changes, NEC 2020, offers expert insight into revisions regarding electrical and life safety topics such as safety for workers, communication systems, limited energy, and energy systems and electric vehicles. This vital resource provides 296 figures and images that make it easier to identify and understand changes, as well as four new articles, including:

    • Article 242, Overvoltage Protection
    • Article 311, Medium Voltage Conductors and Cable
    • Article 337, Type P Cable
    • Article 800, General Requirements for Communications Systems

    This dynamic, illustrated book from NFPA and IAEI is your key to getting up to speed with the 2020 edition of the NEC.

    Don't get caught unaware of changes to the NEC that have an impact on your work. Place your order for Analysis of Changes, NEC 2020, today.

    Are you interested in other editions of the NEC Analysis of Changes? Use the drop-down menu above to select the edition year you need.

  • 2017 Analysis of Changes

    2017 Edition

    Get a handle on what's new in the 2017 edition of the NEC®! In Analysis of Changes, IAEI and NFPA® explain and illustrate major Code changes, so you understand their impact on your work.

    Revisions in the 2017 edition of NFPA 70®, National Electrical Code® have a direct impact on residential, commercial, and industrial designs and installations. Be the first to know about essential changes in the NEC -- including new coverage of renewable energy systems -- with this illustrated electrical book from the International Association of Electrical Inspectors (IAEI) and NFPA, the Code source. Analysis of Changes helps you get up-to-code while you maximize time and efficiency on the job.

    Stay informed about significant Code changes with summaries for 255 top revisions in the NEC.

    With the increasing interest in renewable energy, the electrical industry is tasked to address the safety and operation of these systems. In addition to covering changes that help improve electrical and fire safety, IAEI's Analysis of Changes NEC 2017 analyzes five new major advances in the Code: Energy Storage Systems (Article 706), Large-Scale Photovoltaic (PV) Electric Power Production Facility (Article 691), Stand-Alone Systems (Article 710), Direct Current Microgrids (Article 712), and Fixed Resistance and Electrode Industrial Process Heating Equipment (Article 425).

    • Each revision is shown as a color graphic to clarity how to apply the requirement correctly.
    • Excerpts of the 2017 edition NEC Code provide the explanatory language.
    • Technical Changes to the 2017 NEC Code -- with First Revision (FR) and Second Revision (SR) changes referenced -- assist you in knowing the changes and the reasons behind them.

    Get up-to-code fast! Discover why so many electrical professionals rely on Analysis of Changes to help them advance to the latest edition of the National Electrical Code. (Softbound, 592 pp., 2017)

  • Historical Editions

    Previous editions of NFPA® documents are available for sale. Please see applicable NFPA codes and standards product pages to confirm which editions are available for purchase. If you have any questions, contact NFPA Customer Support at 1-800-344-3555 or

  • Also in NFPA 70: National Electrical Code (NEC)