How big a generator do I need for a 3 bedroom house?

4 Answers

  • 1 decade ago
    Favorite Answer

    More information is needed, but as a general rule I don't suggest anything smaller than 5000 watts. This will allow operation of small kitchen appliances for cooking, furnace or some electric heat, plenty of lighting, and so on. I use a 5500 watt generator for backup power in my home.

    Read through my home generator page for added information.

  • 1 decade ago

    You need to find the amount of wattage your house uses for electrical devices. If you are planning on using a generator for powering the whole house, you also need a switch that seperates the generator from the electric companies line. Unless you plan on running a bunch of extension cords to the generator.

  • 1 decade ago

    It depends on how many electric appliances you have, like heaters, water heaters, stove, etc., not the # of bedrooms.

  • 1 decade ago

    45 KW unit will handle the entire house.

    Source(s): I'm a real electrician, not an impostor
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