PORTABLE GENERATORS
Finding the Right Generator
Be sure the generator you select is large enough to handle your requirements and anticipated needs.
To determine the right size generator, add up the total watts of all lights, appliances, tools or other equipment to be connected to the generator. Check the nameplates to determine wattage. If wattage is not shown but amps and volts are given, the following simple formula may be used: Amps x Volts = Watts (Ex. 12.5 Amps x 120 Volts = 1500 Watts)
Chart 1: Home Applications – Approximate Wattage Requirements
EQUIPMENT
WATTAGE
EQUIPMENT
WATTAGE
Air conditioners (10,000 BTU) Blankets, electric
2000 - 3000
Freezers, food Heaters, radiant
300 - 500
1300
150
Hot plates 1250 Refrigerators/freezers 600 - 2000 Sump pumps 400 - 3000 Toasters 1100 - 1700 TVs 100 - 350 Water heaters 3000 - 4500 Water pumps 1000 - 3000
Broilers 1400 Clothes dryer, electric 5000 - 10000 Coffee makers 850 Dishwashers 1500 - 2500 Fans, attic 375 Fans, furnace 800 - 1200 Fans, window 200
Chart 2: Portable Electric Tools – Approximate Wattage Requirements
WATTAGE/ HORSEPOWER
WATTAGE/ HORSEPOWER 900 - 1100-watts 600 - 1500-watts
EQUIPMENT Blowers, electric
EQUIPMENT
1 ⁄ 1 ⁄
2 - 3.0-HP
Routers
Compressors
4 - 3.0-HP
Sanders, belt Sanders, disc Sanders, orbital
Concrete vibrators, 3 ⁄ Concrete vibrators, 1.0-HP Concrete vibrators, 2.0-HP Concrete vibrators, 3.0-HP
4 -HP 840-watts
1200-watts 250-watts
1080-watts
Saws, chain 800 - 1500-watts Saws, circular, 6-inch 1000 - 2500-watts Saws, cutoff 2500-watts Saws, jig 200 - 800-watts Saws, masonry 2.0 - 5.0-HP Saws, radial arm 1.0 - 5.0-HP Saws, table 1.0 - 3.0-HP Screwdrivers 550-watts Shears, metal-cutting 750-watts Wrenches, impact, 1 ⁄ 2 -inch 600-watts Wrenches, impact, 3 ⁄ 4 -inch 720-watts Wrenches, impact, 1-inch 1200-watts
1560-watts
2400-watts
Drain cleaners
250-watts
Drills, 1 ⁄ Drills, 3 ⁄ Drills, 1 ⁄
4 -inch 8 -inch 2 -inch
250 - 600-watts 300 - 600-watts 350 - 1200-watts
Drills, 1-inch
1000-watts 4 - 1.0-HP 1 ⁄
Grinders, bench Grinders, portable
1000 - 2500-watts
Hammers, demolition 1260-watts Hammers, rotary 1200-watts Heaters, space 1 ⁄ 4 - 2.0-HP Lights Check wattage on bulb Pump, electric 1 ⁄ 2 -HP and up
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