The National Electrical Manufacturers Association (NEMA) has published ANSI ANSLG C38.377 Specifications for the Chromaticity of Solid State Lighting Products.

This publication specifies the range of chromaticities recommended for general lighting with solid state lighting (SSL) products and advises customers of their white light chromaticities. This vital information applies to chromaticity standards and definitions and specifications of the color rendering index. C78.377 applies to LED-based SSL products with control electronics and heat sinks with AC main power or DC voltage power. It covers fixtures incorporating light sources and integrated LED lamps.

The contents and scope of C78.377-2011 may be viewed at  www.nema.org/stds/ANSI-ANSLG-C78-377.cfm. A hard or electronic copy may be purchased for $84 by visiting www.global.ihs.com, or by contacting IHS at 800-854-7179 (U.S.) or 303-397-7956 (international).

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.