NEMA - ANSI C78.21
For Electric Lamps - PAR and R Shapes
| Organization: | NEMA |
| Publication Date: | 1 January 2003 |
| Status: | inactive |
| Page Count: | 50 |
scope:
This standard provides physical and electrical characteristics of the group of incandescent lamps that have PAR and R bulb shapes. Lamps with clear, frosted, and lens end bulbs and with clear and prescription lenses and with various reflector coatings are covered. Lamps covered in this standard may contain either of two basic types of light sources; an incandescent filament or a tungsten halogen inner bulb. Sunlamps and heat lamps of the R type are included. Lamps with discharge arc tubes are not included.
Other groups of incandescent lamps are covered in the following associated standards:
ANSI C78.20-2003, American National Standard for Incandescent Lamps - A, G, PS and Similar Shapes with E26 Medium Screw Bases
ANSI C78.22-1995, American National Standard for Incandescent Lamps - A, G, PS and Similar Shapes with E39 Mogul Screw Bases
ANSI C78.23-1995, American National Standard for Incandescent Lamps - Miscellaneous Types
At the time of issuance of this standard there was no comparable standard published by the International Electrotechnical Commission (IEC).
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