The National Electrical Manufacturers Association (NEMA) published NEMA MG 1-2014 Motors and Generators. This standard assists users in the proper selection and application of motors and generators. It contains practical information concerning performance, safety, testing, construction, and manufacture of ac and dc motors and generators.
Changes in this edition include encompassing small motor premium efficiency values for capacitor-start/induction-run single-phase, capacitor-start/capacitor-run single-phase, and three-phase induction machines; as well as KW equivalent efficiency ratings.
NEMA MG 1-2014 is available in hard and electronic format on the NEMA website for $414. It may also be purchased on a CD or for multiple network users.