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Sizing My Home Generator

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Wattage Requirement Guide - the following is intended to be a guide to helping consumers understand how electrical appliances impact electric demand and generator sizing.
 
Running wattage is the amount of electricity necessary to run your appliances continually.  To determine Running Watts identify the items you intend to use and sum.  Add the the sum of the Running Watts to the largest single Starting Wattage Appliance.
 
Starting wattage is the additional amount of electricity needed for the 2 - 3 seconds to start electric motors commonly found in husehold applicances.

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The wattage listed above represent approximate wattage range. Check data plate or owners manual for exact wattage requirement.

Appliance
Check Your Needs
Running Watts
Sum of Running Watts for Each Appliance
Additional Starting Watts (select the single largest appliance you will use for Starting Watts and add to Running Watts).  You will then have a good feel for the generator size you will want to consider.
Light Bulb - 75 watts per bulb
____
75/bulb
______
-
Ceiling Fan
____
800
______
1200
Clothes Dryer - Electric
____
5400
______
1350
Clothes Dryer - Gas
____
700
______
1300
Clothes Washer
____
1150
______
2250
Coffee Maker
____
1200
______
-
Freezer
____
800
______
1600
Dishwasher - Heat Dry
____
1500
______
-
Electric Water Heater
____
4500
______
-
Furnace - Gas 1/2 HP Blower
____
600
______
1200
Furnace - Electric Heat Pump 10kW
____
10400
______
12800
Hair Dryer
____
1200
______
-
Microwave Oven
____
1000
______
-
Personal Computer
____
800
______
-
Refrigerator
____
600
______
1200
Television
____
500
______
-
Toaster
____
1000
______
-
Well Pump
____
1000
______
2000
Sum of Running Watts and Single Largest Starting Wattage
-
-
______
________
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