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NECA: National Electrical Contractors Association

NECA, the National Electrical Contractors Association, is the voice of the $130 billion industry responsible for bringing electrical power, lighting, and communications to buildings and communities across the United States. Established in 1901, the organization is dedicated to serving the management interests of the entire electrical contracting industry. NECA represents electrical contractors from firms of all sizes performing a range of services. While most NECA contractors qualify as small businesses, many large, multinational companies are also members of the association. Standards from NECA are available both individually, directly through the ANSI webstore, and as part of a Standards Subscription. If you or your organization are interested in easy, managed, online access to standards that can be shared, a Standards Subscription may be what you need - please contact us at: or 1-212-642-4980 or Request Proposal Price.

Below are NECA's best-selling standards. To find additional standards, please use the search bar above.

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NECA 1-2015

Standard for Good Workmanship in Electrical Construction (ANSI)

Describes industry best practices for good workmanship in electrical construction.

NECA 200-2016

Recommended Practice for Installing and Maintaining Temporary Electric Power at Construction Sites (ANSI)

Describes installation procedures for temporary power at construction sites. It covers the planning, installation, expansion, maintenance, cutover, and removal of temporary power systems operating at 600 volts or less. NECA 200 is approved as an American National Standard (ANS).

NECA 101-2013

Standard for Installing Steel Conduit (Rigid, IMC, EMT) (ANSI)

Describes installation practices for rigid metal conduit (RMC), intermediate metal conduit (IMC), electrical metallic tubing (EMT), and steel conduit with supplementary PVC coating. Includes guidelines for conduit bending and threading. Developed jointly with the Steel Tube Institute of North America (STI), NECA 101 is approved as an American National Standard (ANS).

NECA 407-2015

Standards for Installing and Maintaining Panelboards (ANSI)

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.

NECA 90-2009

Standard for Commissioning Building Electrical Systems (ANSI)

This standard describes installation procedures for commissioning common newly installed or retrofitted building electrical systems and equipment. It defines the process of commissioning building electrical systems and provides sample guidelines for attaining optimum system performances that conform to design, specification, and industry accepted codes and standards.

NECA 100-2013

Symbols for Electrical Construction Drawings (ANSI)

This publication describes graphic symbols used to represent electrical wiring and equipment on construction drawings. In this publication, the term ôelectricalö is used to include electrical, electronic, and communications systems covered by the National Electrical Code (NFPA 70). This publication also summarizes recommended drawing practices for electrical construction drawings.

The PDF version of NECA 100 includes:A link containing a .zip file with the NECA 100 AutoCad Symbol files can be downloaded from the Table of Contents. NOTE: It's a zip file, so it will immediately initiate a download. - See more at:

NECA 102-2004

Standard for Installing Aluminum Rigid Metal Conduit (ANSI)

This standard describes installation procedures for aluminum rigid conduit, including aluminum RMC with a supplementary PVC coating.

NECA 402-2014

Standard for Installing and Maintaining Motor Control Centers (ANSI)

Describes installation and maintenance practices for motor control centers rated 600 volts or less. It also covers periodic routine maintenance procedures for motor control centers and special procedures to be used after adverse circumstances, such as a short-circuit, ground-fault, or immersion in water.


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.