National Electrical Installation Standards

Standards as High as Your Own


Raising the Bartool belt

What are NEIS? National Electrical Installation Standards (NEIS) are the first and only quality and performance standards for electrical construction. They go beyond the minimum safety requirements of the National Electrical Code (NEC) to define what is meant by installing electrical products and systems in a “neat and workmanlike manner.”

Learn More

Featured Standardsplyers with yellow handle


NECA 407-2015, Standard for Installing and Maintaining Panelboards

This standard describes installation and maintenance procedures for panelboards, and special procedures used after adverse operating conditions such as a short-circuit, ground-fault, or immersion in water. This standard applies to panelboards rated 600 Volts AC or less, with main disconnects or lugs rated 1600 Amperes or less, and with feeder or branch circuit overcurrent devices rated 1200 Amperes or less. This publication applies to single panelboards, multi-section panelboards, and load centers that are installed in the fiend and used for distributing power for commercial, institutional, and industrial loads in nonhazardous locations both indoors and outdoors.
» Learn More

NECA 409 - 2015, Standard for Installing and Maintaining Dry-Type Transformers (ANSI)

Describes installation and maintenance practices for dry-type, two-winding transformers used for supplying power, heating, and lighting loads for commercial, institutional, and industrial use in nonhazardous locations, both indoors and outdoors. NECA 409 is approved as an American National Standard (ANS).
» Learn More

News & Updateswrench

  • NEW THIS YEAR at the 2015 NECA Safety Professionals Conference

    Friday, May 01, 2015
    NEW THIS YEAR at the 2015 NECA Safety Professionals Conference: HR and the Safety/Risk Management Relationship – Keith Wheeler, SPHR, SHRM-SCP, Electrical Contractors Safety Responsibilities and Strategies – Discussion, and “Safety Training A to Z – From Orientation, through Refreshers, to New Requirements (like GHS)” – Jonathan Klane
    Read more
  • 2015 NECA Safety Awards Winners

    Monday, Apr 20, 2015
    NECA Safety is proud to announce the winners of the 2015 Safety Excellence and Zero Injury Awards. Since its inception, the NECA Safety Awards program has continued to grow in applicants and winners. This year seen each NECA District had a winner.
    Read more

State Regulationsusa country shape

Find the major provisions of electrical code, enforcement, and contractor/electrician licensing requirements for each state in the U.S. It is based upon information supplied by NECA Chapters.

State Electrical Regulations
State Low Voltage Licensing

Code Question of the Daytextbook

  • Thursday, October 27, 2016
    CQD: 10/27/2016

    I start every morning off with CQD…. keeps me in tune with the code, thanks for your service.

    My Companies Pre Fab Dept installs Standard Manufacture’s Panelboards onto a painted welded steel rack with an Enclosure on top connected by 3-3” close nipples. We save money in Prefab by being in a controlled environment. Our customers love this because all the circuits of a panel are ran Up into the enclosure (# 10 THHN)( unless a larger circuit is called for) where we have 50a finger safe color-coded terminal blocks for each of the 3 phases and the Grounded Conductor (neutral). The Eq. Ground wire terminates on a bar within the panel and the same size wire up to an additional ground bar in the enclosure. Customers love this because maintenance or adding a circuit does not require taking the panel cover off and exposing employees to the higher Arc Flash Hazard that exists in the panel itself. Right Now we take the individual # 10 grounded conductors from the Panelboard neutral bar up to the terminal block.

    Question: Would the code allow us to run the same size grounded conductor that feeds the Neutral bar in the panel, from the Neutral bar in the panel, to an additional Neutral bar in the Enclosure above. This would be in lieu of running 42 # 10 grounded conductors from the neutral bar in the panel to the enclosure above.

    Thanks again for your service,

    Kelly Wofford

  • Wednesday, October 26, 2016
    CQD: 10/26/2016
    View Question and Answer

How's your knowledge?
» Get the Answer!