A small supermarket 20 m long by 15 m wide is to be illuminated to a level of 600 lx by 2400 mm 125 W fluorescent lamps having an efficacy of 65 lm/W. The maintenance factor is 0.85 and the coefficient of utilization is 0.6. Calculate the number of fittings required and show their positions on a scale plan. Calculate the total current taken by the lighting.
A small supermarket 20 m long by 15 m wide is to be illuminated to a level of 600 lx by 2400 mm 125 W fluorescent lamps having an efficacy of 65 lm/W. The maintenance factor is 0.85 and the coefficient of utilization is 0.6. Calculate the number of fittings required and show their positions on a scale plan. Calculate the total current taken by the lighting.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A small supermarket 20 m long by 15 m wide is to be illuminated to a level of 600 lx by 2400 mm 125 W fluorescent lamps having an efficacy of 65 lm/W. The maintenance factor is 0.85 and the coefficient of utilization is 0.6.
Calculate the number of fittings required and show their positions on a scale plan.
Calculate the total current taken by the lighting.
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