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Electricity consumption is estimated by multiplying the connected load in watts
times the hours of usage. For example, a photoelectrically controlled 100 Watt
sign light operates approximately 12 hours per day, has an estimated annual
consumption calculated as follows:
100 watts x 12 hours x 365 days = 438,000 watt-hours or 438 kWh per year.
If conditions are such as to cause reasonable doubt concerning the connected
load, recording equipment will be installed to determine the kW connected load.
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Estimating
Consumption
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