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After a recent lighting retrofit, the measured load on the affected lighting panel is 110...

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After a recent lighting retrofit, the measured load on the affected lighting panel is 110 amps at 277 volts. The load is constant for 100 hours each week. Assuming the power factor to be 1, what is the annual energy consumption in kWh?

A.

1,584.44

B.

15,844.4

C.

158,444

D.

15,844,400

Step-by-Step Calculation:

Power (kW) = Volts × Amps ÷ 1000 = 277 × 110 ÷ 1000 = 30.47 kW

Weekly consumption = 30.47 × 100 hr = 3,047 kWh/week

Annual consumption = 3,047 × 52 = 158,444 kWh/year

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