1.3 analysis of illumination of the space used before change and after the change, fluorescent lamps, T8 size 36 watt tube. LED T8 Size 18 watts case study - P-10B building parking lot P-1A Thai summit tower, it is found that the effects of values of the illumination of the area before and after the change from the change of fluorescent lamp A T8 size 36 watt tube LED T8 Size 18 watts. I P1 - P10 differences significant when considering the 0.05 average. Found that the electricity before changing the average is less than after the change from a fluorescent lamp, T8 size 36 watt tube LED T8 Size 18 watts.
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