The National Electrical Manufacturers Association (NEMA) has published ANSI/NEMA MW 1000-2008, Revision 1-2009 “Magnet Wire”. NEMA says MW 1000 is the premier standards publication for general requirements, product specifications and test procedures for magnet wire. This revision updates MW 1000-2008, which was published in March 2009.
The revised publication features significant updates, including:
• Substantive changes to several test procedures to better define the
equipment, materials or test conditions these procedures specify.
Amended tests include the bond strength test procedure, the transformer
oil resistance and hydrolytic stability test, and the high-voltage
• New Appendix E, “General Rules for Rectangular Wire Dimensions”.
• New definitions.
• Reorganized table of requirements for bare rectangular wire.
• Updated requirements and specifications.
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