ANSI C78.22:1995 (R2003)

This standard sets forth the physical and electrical characteristics of the group of incandescent lamps that have A, G, PS, and similar bulb shapes with E39 mogul screw (single- or double-wntact) bases. Only clear, inside frost, and white bulb finishes are acknowledged. Excluded from coverage are tungstenhalogen lamps and projection lamps. In addition to common-line voitage lamps, listed in Table 1 , a group of series burning lamps rated at constant current are covered in Table 2. Other groups of incandescent lamps are covered in the following related standards: ANSI C78.20-1995, American National Standard for Electric Lamps - Incandescent Lamps - A, G, PS, and Similar Shapes with E26 Medium Screw Bases ANSI C78.21-1995, American National Standard for Electric Lamps - Incandescent Lamps - PAR and R Shapes ANSI C78.23-1995, American National Standard for Electric Lamps - Incandescent Lamps - Miscellaneous Types At the time of issuance of this standard, there was no comparable standard published by the International Electrotechnical Commission (IEC).