Given below is a generic designation system for pin-based compact fluorescent lamps and T5 twin fluorescent lamps. This system is not applicable to screw-based@ self-ballasted compact fluorescent lamps@ also known as integral compact fluorescent lamps.
NEMA LL 8-2008 history
2010NEMA LL 8-2010 LIMITS ON MERCURY CONTENT IN SELF-BALLASTED COMPACT FLUORESCENT LAMPS
2008NEMA LL 8-2008 LIMITS ON MERCURY CONTENT IN SELF-BALLASTED COMPACT FLUORESCENT LAMPS