The NEMA/ANSI C78 Committee for Electric Lamp Standards has two working groups developing chromaticity standards addressing non-white light (NWL). C78.377 working group This working group is revising the ANSI C78.377-2017 standard by adding 1800K and 2000K nominal and extended quadrangles. C78.378 working group This working group is creating a new ANSI C78.378 standard defining long [...]