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How to choose a Generator


Generators are usually chosen based on their maximum and rated power. One must calculate what the total load will be in order to effectively choose the proper generator. Some appliances and equipment require a higher starting wattage and then it tapers.
Rule of thumb is to take the running wattage and multiply by 3 unless the appliance or equipment is under a  constant load such as light bulbs.
Click on Amps, Watts,Volts and Kilowatts for the formula to calculate wattage. Otherwise use the charts provided below.

 

Appliance Wattage:(Running) Wattage:(Starting)
Refrigerator 700 2800
Lights Depend on bulb Depend on bulb
Radio 40 to 225 40 to 225
Well Pump-1HP 1000 3000
Well Pump-2HP 2000 6000
Well Pump-3HP 3000 9000
Electric Water Heater 4500 5000
Freezer 500 2500
Microwave-1000  watt 1000 1250
Television 300 to 800 300 to 800
Electric Fry Pan 500 to 1300 500 to 1300
Electric Heat Pump 10000 12500
Gas Furnace Fan 300 to 875  500 to 2350
Coffee Maker 1100 1100
Hair Dryer 1500 1500
Stove Top-8"  2100 2100
Oven 6500 6500
Fan 275 275
Toaster 200 200
Electric Dryer 6000 7000
Washing Machine 1200 1350
Computer 700 to 1000 700 to 1000
Computer Monitor 200 to 800 200 to 800
Printer 400 to 800 400 to 800
Air Compress-1hp 1600 5000
Drill 400 to 700 600 to 900
10" Table Saw 1900 4800
Bench Grinder 1450 2750

 

What to look for in the actual generator

  • Revolving field because it will be less weight and more efficient (up to 25% more) than a revolving armature generator.>
  • Generator has a skewed stator so as to provide a smooth output wafeform.
  • UL 2200 Listed
  • Generator employs automatic voltage regulation to prevent voltage spikes from damage.
  • Generator has a displaced phase excitation to maximize starting capability and provide more surge power than brushless generators.

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Tuesday, 08 January 2008 04:17 PM