The National Electrical Manufacturers Association (NEMA) published NEMA MG 1-2011 Condensed
Guide for General Purpose Industrial AC Small and Medium Squirrel-Cage
Induction Motor Standards.
A condensation of the standard NEMA MG 1-2011 Motors and Generators, this document includes some parts reprinted in their entirety while others have been combined or abbreviated.
In 2007 Congress passed the Energy Independence and Security Act, which increased the level of the efficiency standards on existing covered electric motors and added efficiency standards for additional types of electric motors manufactured on or after December 19, 2010. In February of 2011, NEMA revised the Premium Efficiency Motor tables for medium motors by adding efficiency values for 8-pole premium efficiency motors.
MG 1 Condensed may be downloaded at no cost or purchased in hardcopy for $110 on the NEMA website.
Electrical Manufacturers Association (NEMA) represents nearly 350 electrical
equipment and medical imaging manufacturers that make safe, reliable, and efficient products
and systems. Our combined industries
account for 360,000 American jobs in more than 7,000 facilities covering every
state. Our industry produces $106 billion shipments of electrical equipment and
medical imaging technologies per year with $36 billion exports.