The National Electrical Manufacturers Association (NEMA) published ANSI C136.32 American National Standard for Roadway and Area Lighting—Enclosed Setback Luminaires and Directional Floodlights.
ANSI C136.32 covers dimensional, maintenance, and electrical features that permit the interchange of similar enclosed luminaires that have the same light distribution classification or type used in roadway or area lighting equipment. Luminaires covered by this standard are generally yoke-, trunnion-, or tenon-mounted. They are traditionally called floodlights or setback luminaires. This standard has been updated to reflect current industry practices and include new lamp types.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Arlington, Virginia. Its 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. Worldwide annual sales of NEMA-scope products exceed $120 billion.
Source:
http://www.lightdirectory.com/news-NEMA-Publishes-National-Standard-For-Roadway-And-Area-Lighting-Equipment.htm
