Luminaires were installed in a cold environmental chamber. Tests were carried out at 25 degrees C, 10 degrees C, 0 degrees C, -10 degrees C, and -30 degrees C. Illuminance was measured at a fixed distance from the luminaires, and their electrical parameters were studied. Luminaires operated with compact fluorescent lamps (CFLs) in an environment of -30 degrees C are shown to provide less than 30% of the illuminance obtained at 25 degrees C. However, the electrical consumption and power factor are not very sensitive to the ambient temperature. Luminaires with CFLs are not recommended in a cold climate environment such as that of Quebec.
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