This Standard specifies the safety and interchangeability requirements of tungsten filament incandescent lamps for general lighting service having a rated wattage up to and including 200 W; a rated voltage of 50 V to 250 V inclusive; bulbs of the A, B, C, G, M, P, PS, PAR or R shapes, or other bulb shapes where the lamps are intended to serve the same purpose as lamps with the foregoing bulb shapes; and bulbs with all kinds of finishes; and caps B15d, B22d, E14, E27 or E27/51x39. As far as is reasonably practicable, this standard is also applicable to lamps with bulbs and caps other than those mentioned above, but which serve the same purpose.
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