This standard applies to ordinary incandescent lamps for general lighting purposes having:
a) a nominal life of 1 000 hours;
b) a rated wattage of 15 to 1 500 watts, inclusive;
c) a rated voltage of 110, 230, 240 and 250 volts;
d) bulbs clear or internally frosted; and
e) caps, normal bayonet or Edison screw as set out in Appendix A.
IS 418-1978 history
1979IS 418-1978 Specification for tungsten general electric lamps