Down Light Placement Tool

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The Down Light Placement Wizard is designed to perform lumen method calculations on a rectangular room. The lumen method determines average illuminance achieved on the workplane using a derived property of luminaire photometrics and room geometry called the coeffecient of utilization. The lumen method works under the assumptions that the luminaires are spaced uniformly, the room is empty, and has surfaces the exhibit perfectly diffuse reflectance. Because the lumen method provides an average illuminance, values for point calculations might vary considerably. For more information on the lumen method consult the IESNA Lighting Handbook.

4.5 inch 20 Watt LED Open Down Light
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6 inch 250 Watt PAR38 Open Down Light
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6 inch 100 Watt Incandescent Open Down Light
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