Lurninaries of 2000 lurnens output will be installed in a room . The desired illurnination is 200 foot candles. The coefficient of utilization is 0.45 and maintenan ce factor is 90%. Determin e the num ber of luminaries needed if the size of th e room is 120 m 2.

Lurninaries of 2000 lurnens output will be installed in a room . The desired illurnination is 200 foot candles. The coefficient of utilization is 0.45 and maintenan ce factor is 90%. Determin e the num ber of luminaries needed if the size of th e room is 120 m 2.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.2: Water Heater Branch Circuit

Problem 9R: An 80-gallon electric water heater has 60F (15.56C) incoming water. How many minutes can a...

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Question

Luminaries
of 2000 lumens output will be installed in a room. The desired illumination
is 00 foot
candles. The coefficient of utilization is 0.45 and m aintenan ce factor is 90%. Determine the num ber of
luminaries needed if the size of the room is 120 m 2.

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