This standard covers the objectives and tolerances for the chromaticity of T8@ T10 and T12 fluorescent lamps with a nominal loading of from 5 to 10 watts per foot at their normal 100 hour rating point. This standard also covers some compact lamps@ where noted. The colors included are 2700K@ 3000K/warm white@ 3500K/white@ 4000K/4100K/cool white@ 5000K@ and 6500K/daylight. The lamp under test shall be operated under reference conditions as specified in ANSI C78.375 Guide for Operation of Fluorescent Lamps and in the relevant C78 lamp standard.
NEMA C78.376-2001 history
2014NEMA C78.376-2014 Electric Lamps — Specifications for the Chromaticity of Fluorescent Lamps
2001NEMA C78.376-2001 Electric Lamps - Specifications for the Chromaticity of Fluorescent Lamps
1996NEMA C78.376-1996 Electric Lamps - Specifications for the Chromaticity of Fluorescent Lamps (Revision of ANSI C78.376-1969(R1991); First Edition)
1969NEMA C78.376-1969 Chromaticity of Fluorescent Lamps@ Specs. for (Now copyrighted by NEMA)