A typical water pump’s wattage can vary between 250 watts to 1,100 watts. Take the wattage of the specific water pump and multiply it times how many hours a day it runs. Then, multiply it by how many days a year it runs, and divide by 1000. This will give the amount of kilowatt-hours the pump is using.Click to see full answer. Correspondingly, how many watts does a 1hp water pump use?It is very loud. A 1 hp sump pump SHOULD draw about 750 watts running and about 15-1800 starting. will a 5000 watt generator run a well pump? Your pump only runs as needed.So you can plan it. At this wattage you can have other items available, and draw back when needed. 5000 watt is plenty to run the well, a furnace, refrigerator, some lights, small tv, and even make coffee.. Also know, what size generator do I need to run a water pump? Homeowners can often power most household appliances using between 3000 and 6500 watts. If your home has a smaller furnace and city water, you can generally expect that 3000-5000 watts will cover your needs. If you have a larger furnace and/or a well pump, you will likely need a 5000 to 6500 watt generator.How many amps does a 1 HP well pump draw?1 HP submersible pump motor will draw a current of 3. 2 amperes if it is single phase motor at a voltage of 230 volts, and if it is a 3phase motor at a voltage of 440 volts, it will draw a current of 1.7 amperes, maximum.

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