What is the electric cost for operating ten 400W lights and one 150W sign for 30 days at $0.095 per kilowatt hour?

To determine the electric cost of operating ten 400W lights and one 150W sign for 30 days at a rate of $0.095 per kilowatt hour, you need to calculate the total wattage, convert it to kilowatts, find the total energy consumed in kilowatt-hours, and then multiply by the cost per kilowatt-hour.

First, calculate the total wattage for the lights:

• Ten 400W lights = 10 x 400W = 4000W

Next, add the wattage for the sign:

• One 150W sign = 150W

Now, combine the total wattages:

• Total wattage = 4000W + 150W = 4150W

Convert this total wattage to kilowatts:

• Total kilowatts = 4150W / 1000 = 4.15 kW

Now, calculate the total energy consumption over 30 days. Assuming the lights and sign are used continuously for 24 hours each day, you calculate the total hours:

• Total hours = 30 days x 24 hours/day = 720 hours

Now, calculate the total energy consumed in kilowatt-hours:

• Total energy (kWh