Showing posts with label pond pump electricity. Show all posts
Showing posts with label pond pump electricity. Show all posts

Thursday, July 20, 2006

How much does it cost to run a submersible pump?

Electric costs are easy to compute. I am often asked how much it costs to run a submersible pump and if there is a difference between brands. I will use the example of a 100 watt light bulb and a utility cost of $0.08 per KWH. A KWH is a kilowatt-hour or, 1,000 watts used for 1 hour. A 100 watt light - .1 kilowatt or .1 KWH = less that 1 cent per hour.

• Find the actual wattage used by the motor. (If the actual amp draw is not available, estimate by using the full load amps plate.)

• Watts = volts x amps for single phase motors. The light bulb has an amp draw of 8.7 x 115 volts = 100 watts.

• Compute your cost per month by multiplying the KWH x 24 (hours used per day) x 30 (days used per month) x cost in KWH (to find the actual cost look at your last power bill and divide the total power charges byt KWH used).

A good general rule to use when buying a pump is the following: Usually the more expensive the pump is the less electricity it will use.