The results showed that 1.1 Analysis of average electric power before switching and after switching from fluorescent lamps, fluorescent and T8 36 watt bulb LED T8 18 watt Case parking lot P-1A -. P-10B Summit Tower Building, Thailand the comparison showed that the average energy use before and after the change, the transition from fluorescent lamps with T8 fluorescent lamps with 36-watt LED T8 18 watt sizes are different. The significance level was 0.05 when the average. The average electricity consumption at the first change, with the average over the transition from traditional fluorescent T8 Fluorescent bulbs are 36 watts LED T8 18 watt.
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