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NECA Reaffirms Standard for Symbols for Electrical Construction Drawings

Aug 20, 2013

Publication Includes Images for AutoCAD

NECA 100-2013, Symbols for Electrical Construction Drawings, is now available from the National Electrical Contractors Association (NECA).  This newly reaffirmed ANSI-approved standard describes graphic symbols used to represent electrical wiring and equipment on construction drawings. In this publication, the term “electrical” 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.

NECA 100 is a valuable resource for architects and engineering teams responsible for ensuring consistency in the electrical symbols they use for developing construction drawings. Standardized symbols are used in all construction plans and specifications to ensure consistent interpretation of the drawings and correct placement of electrical, mechanical and plumbing systems. This reaffirmed edition of NECA 100 also includes the electronic version of the symbols for use with AutoCAD.

NECA 100 is also used in electrical apprenticeship programs for training electrical workers in blueprint reading and understanding and applying electrical construction drawings. This edition marks the third update of the standard as it keeps paces with the constantly evolving electrical construction industry and new technology, including renewable power and Building Information Modeling (BIM).

“Understanding the symbols and correctly interpreting their placement in construction drawings is a fundamental skill for electrical workers, as well as the contractors and engineers who produce the drawings,” said Michael Johnston, NECA’s Executive Director of Standards and Safety. “This standard not only ensures their drawings are accurate, but it helps them identify inconsistencies in other drawings before mistakes can be made on a job site.”

About NEIS

NEIS® are the only quality and performance standards for electrical construction. They are used primarily by electrical contractors, consulting engineers, facility managers, and other professionals who design and specify for electrical construction projects. With their installation detail, illustrations and thorough explanations, NEIS® are also a valuable training tool for electrical construction industry. The NEIS are regularly and meticulously revised and expanded to align with the current edition of the NEC and other applicable standards.

“NECA’s National Electrical Installation Standards (NEIS®) library has grown over the years, and as new technologies emerge, the NEIS® evolve and keep pace,” Johnston said. Johnston also emphasizes that “the standards are constantly providing significant value to those in the electrical designing and engineering communities. The NEIS help professionals in developing design specifications in that they reduce and often eliminate specification writing time.” 

There are currently 44 NEIS®, with more essential standards in development, specifically standards related to renewable energy, energy storage and wind power generation systems. In addition, the NEIS® Yearbook Vol. 8 includes NECA’s three newest NEIS: NECA 412 Standard for Installing and Maintaining Photovoltaic Systems and NECA 413 Standard for Installing and Maintaining Electric Vehicle Supply Equipment (EVSE), and NECA 701 Standard for Energy Management, Demand Response, and Energy Solutions.

Ordering Information

NECA 100-2013 Symbols for Electrical Construction Drawings is $75 for NECA members and $125 for non-members. The publication includes digital versions of the images for use with AutoCAD. 

Contact the NECA Order Desk at (301) 215-4504 tel, (301) 215-4500 fax, or orderdesk@necanet.org; NECA 100 can also be ordered from the online NECA Store and purchased in PDF format from www.neca-neis.org/standards. Bulk pricing is available upon request.