Facebook  |  Twitter  |  LinkedIn  |  Print

Magnet Wire

Magnet wire is an insulated electrical conductor, most commonly copper or aluminum, that when wound into a coil and energized creates an electrical field. Ninety percent of all electrical energy requires modification through the use of a magnet to be useful. From high-voltage transformers to cellphones, magnet wire is used everywhere.

Products encompass all insulated conductors used in the creation of an electromagnetic field including those manufactured in accordance with NEMA MW 1000 Magnet Wire, and extruded conductors used in the creation of an electromagnetic field.

NEMA MW 1000 Magnet Wire is recognized throughout the world as the premier Standard for the construction and testing of magnet wire and magnet wire packaging. NEMA Members develop performance requirements and test procedures for extruded insulated magnet wire products.



  • Develops and maintains ANSI/NEMA MW 1000 Magnet Wire
  • Contributes to International Electrotechnical Commission (IEC) Technical Committee No. 55, Winding wires, including TC 55 WG 1, Specification sheets; serves on IEC Technical Advisory Group (TAG) Secretariat to TC 55, which serves as the mechanism for establishing U.S. positions on TC 55 Standards actions; and participates in the U.S. National Committee (USNC) to the IEC, which holds the Secretariat for TC 55
  • Collaborates with the American Society for Testing Materials (ASTM International), since NEMA periodically considers adopting ASTM test procedures critical for determining compliance with magnet wire product performance requirements
  • Works with Underwriters Laboratories Inc. (UL), to ensure that requirements and administrative procedures associated with UL Component Recognition of magnet wire do not overburden manufacturers; maintains UL Standard 1446 Systems of Insulation Materials—General and UL Standard 2353 Single- and Multi-Layer Insulated Winding Wire
  • Works to de-list copper from the Toxic Inventory of Solid Waste, Clean Air Maximum Achievable Control Technology (MACT) Standard through the Safety, Health and Environment Committee


  • Evaluates U.S. Environmental Protection Agency and U.S. Department of Energy legislation and their impacts on the industry


  • Aerospace
  • Agriculture
  • Automotive, marine and transportation
  • Chemical and petrochemical
  • Defense
  • Electronics
  • Mining
  • Nuclear
  • Oil and gas
  • Paper and printing
  • Power generation, transmission and renewable energy


Staff Contact

Related Manufacturers

Related Publications

Copyright © NEMA. All rights reserved. (703) 841-3200, 1300 North 17th Street, Suite 900, Arlington, Virginia 22209