Choosing the Right Size Generator

23 Sep.,2024

 

Choosing the Right Size Generator

What Generator Size Will Work Best for Your Home?

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If you&#;re wondering &#;how big of a generator do I need?&#; what you really want to know is how much total wattage you need for a generator to power a home. To determine the best generators for home use, refer to the list and select which appliances and systems you want to power. For an exact wattage number, consult your appliance and systems manuals.

Remember that if an appliance has a motor, you will need to calculate the total wattage using the formula:

Running wattage (R) + Starting wattage (R x 3) = Total wattage needed 

With this formula, you can figure out the approximate total wattage needs for each appliance with a motor. Items like light bulbs and coffeemakers, however, don&#;t need an extra boost of power when they&#;re turned on. For these items, you only need to be concerned about the running wattage. 

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Once you have those, a list of items you want to power and the wattages they need, add the numbers together to figure out what size generator would be right for you. The more appliances you want to use, the bigger generator you will need.  

Below is a list of approximate running wattage for various household appliances and technology:

  • Refrigerator/Freezer: 600 - 800
  • Electric Range (one element):
  • Toaster: -
  • Microwave:
  • Hot Plate:
  • Coffeemaker: 400 - 800
  • Electric Oven:
  • Television: 100 - 350
  • Personal Computer: 500 -
  • Hair Dryer: -
  • Vacuum: 700 -
  • Space Heater:
  • Table Lamp: 150

Below is a list of approximate HVAC and system wattage needs:

  • Electric Furnace: -
  • Heater (radiant):
  • Central Air Conditioning: -
  • Water Heater: -
  • Water Pump: -
  • Window Air Conditioner: 600 -
  • Outdoor Lighting: 500 -
  • Sump Pump:

Note: The power requirements in this guide are general examples and should not be used to calculate specific requirements. Refer to the user manuals that came with your appliances and tools for manufacturer-provided power requirements.

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