Generator Power Guide

Diesel Generators by Aurora

Aurora Generators Inc 

How Much Power do you need?

This is the typical questions that everyone asks at one point or another. Most consumers do not understand how to calculate this into their consideration for what size generator will best suite their needs properly. Lets step back to high school physics.

  • Watts = Volts x Amps
  • Amps = Watts/Volts

You also need to take into consideration that some household items such as your refrigerator or freezer take more wattage to start them and less to keep it running. For example a typical refrigerator takes only about 700 watts to run it (yes, a full size refer/fridge combo). However, each time the compressor cycles it takes approximately 2200 watts to start it. This is the surge wattage of the appliance. We have listed below some typical items with there approximate required wattage. Keep in mind that if it is not listed you can also resort to calculating the requirement by using: Watts = Voltage x Amperage.

 

Household
Items
Running

Wattage Requirements

Additional Wattage Required For Starting
Coffee Maker 1750 0
Dishwasher - Cool Dry 700 1400
Electric Fry Pan 1300 0
Electric Range – 8-inch element 2100 0
Microwave Oven 625 watts 625 800
Refrigerator or Freezer 700 2200
Automatic Washer 1150 2300
Clothes Dryer – Electric 5750 1800
 
1/8 Horsepower 300 500
1/6 Horsepower 500 750
1/4 Horsepower 600 1000
1/3 Horsepower 700 1400
1/2 Horsepower 875 2350
Lights as indicated on bulb 0
Radio 50 to 200 0
Sump Pump
1/3 Horsepower 800 1300
1/2 Horsepower 1050 2150
Television - Color 300 0
Central Air Conditioner

10,000 BTU

1500 2200
Contractor Running
Wattage Requirements
Additional Wattage Required For Starting
Air Compressor – 1 Horsepower 1500 4500
Bench Grinder – 8 inches 1400 2500
Hand Drill – 1/2 inch 600 0
High-pressure Washer – 1 Horsepower 1200 3600
Circular Saw, Heavy Duty – 7-1/4 inches 1400 2300
Electric Chain Saw – 14 inches, 2 Horsepower 1100 0
Table Saw -10 inches 1800 4500
Drills
3/8
inch 4 amps
440 600
1/2 inch 5.4 amps 600 900
Industrial Motors Running

Wattage Requirements

Additional Wattage Required For Starting
 
1/4 Horsepower 600 1000
1/2 Horsepower 875 2300
Capacitor Start Induction Run
1/3 Horsepower 720 1300
1 Horsepower 1600 4500
Capacitor Start Capacitor Run
11/2 Horsepower 2000 6100
Fan Duty
1/4 Horsepower 650 1200
Farm Equipment Running
Wattage Requirements
Additional Wattage Required For Starting
Electric Fence, 25 miles 250 0
Milk Cooler 1100 1800
Milker (vacuum pump) – 2 Horsepower 1000 2300
 
50,000 BTU 400 600
90,000 BTU 500 725
150,000 BTU 625 1000
 
15 amp 380 0
60 amp with 250-amp boost 1500/5750 0
100 amp with 300-amp boost 2400/7800 0
 
200 amp AC 9000 0
230 amp AC, at 100 amp 7800 0
Air Compressors Running

Wattage Requirements

Additional Wattage Required For Starting
1/2 Horsepower 975 1600
1 Horsepower 1600 4500
Computers Running

Wattage Requirements

Additional Wattage Required For Starting
Desktop 600 to 800 0
Laptop 200 to 250 0
Monitor 200 to 250 0
Fax 600 to 800 0
Printer 400 to 600 0
Category: Buyer Guides

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