BS 7173:1989 - Self-ballasted lamps for general lighting services safety requirements
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This British Standard specifies the safety requirements for self-ballasted lamps intended for general lighting services, which are designed to operate directly from supply voltages up to 250 V AC.
These lamps:
Include an integral means of controlling current (i.e., the ballast is built into the lamp).
Are typically screw-base or bayonet-cap types.
Are intended for indoor or outdoor use, depending on the product design.