ANSI C79.1 2002 Edition, September 16, 2002
For Electric Lamps - Nomenclature for Glass Bulbs Intended for Use with Electric Lamps
Includes all amendments and changes through Change/Amendment , 2002
Additional Comments: W/D AUGUST 2014 S/S BY ANSI C78.79
Published By:National Electrical Manufacturers Association (NEMA)
This standard describes a system of nomenclature that provides designations for glass bulbs used as the envelopes for electric lamps. This system is shown in customary (inch-based) units and SI (metric) units.
The nomenclature system is intended for application with bulbs that originate both as parts and as stock. As a part, a bulb is assembled directly into finished lamps without major alterations. As stock, a bulb may be re-worked or altered during lamp assembly, while maintaining its basic identifying characteristics.