This standard describes a system for the designation of high-intensity discharge lamps, including compact, enclosed-arc discharge light sources such as mercury, metal halide, high-pressure sodium, and similar types of lamps.
ANSI C78.380-2007 history
1970ANSI C78.380-2016 American NationalStandardforElectric Lamps— High-IntensityDischarge Lamps— MethodofDesignation
2007ANSI C78.380-2007 High-Intensity Discharge Lamps, Method of Designation