The National Electrical Manufacturers Association (NEMA) published ANSI C82.77-10-2014 American National Standard for Lighting Equipment—Harmonic Emission Limits—Related Power Quality Requirements
This standard specifies harmonic limits, their methods of measurement, and power factor for lighting equipment. With the increased use of sensitive electronic equipment, harmonic distortion on power lines is an ever-increasing issue for residential, commercial, and industrial users. Developing a standard that specifies the limits of total harmonic distortion helps ensure that a manufacturer's equipment meets industry guidelines and protects the overall quality of the power system.ANSI C82.77-10-2014
may be purchased for $69 in electronic or hardcopy format on the NEMA website
.NEMA is the association of electrical equipment and medical imaging
manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Its
400-plus member companies manufacture a diverse set of products including power
transmission and distribution equipment, lighting systems, factory automation
and control systems, and medical diagnostic imaging systems. Total U.S.
shipments for electroindustry products exceed $100 billion annually.