NEMA wattage label


NEMA wattage labels are used on street lighting fixtures to indicate the wattage of the lamp for maintenance purposes, with various colors showing what type the lamp uses.
Yellow sticker indicate the lamp is a sodium vapor lamp
Blue sticker indicates the lamp is mercury vapor
Red sticker indicates the lamp is metal halide
A sticker that is half-red and half-white indicates a pulse start metal halide lamp.
Green is also used on HPS units in Canada.
In addition to being colour-coded, newer NEMA stickers also state the lamp type abbreviation in the lower right-hand corner.
A label with a PS before the MH on a MH sticker indicates that the fixture utilizes the newer pulse start technology, which use different lamps than the older probe start technology.