by Danielfb

Created on: January 13, 2009   Last Updated: January 16, 2009

Purchasing the correct size generator may pay for itself rather quickly, when it comes to flowing electricity to your refrigerator and heating system. Unexpected power outages and heavy rainstorms will not matter when your back up generator assures peace of mind with knowing that your sump pump will continue to pump, saving costly water damage and dangerous mold. Wintertime power outages can cause pipes to freeze and burst causing even more water damage not to mention the plumber's bill.

There are many types of generators to choose. The two most common for household use are portable and permanent standby. The portable generator is the most inexpensive type. If you live in an area that has a low volume of power outages this maybe your best option. Keep in mind that you will be limited to the amount of items that you can plug directly into the generator. If your area is prone to severe weather conditions than the permanent standby generator may be a better option. The permanent standby generator typically mounts on a concrete slab and connects to your homes electrical panel directly. When a blackout occurs, the permanent standby generator is equipped with an automatic transfer switch that turns on automaticly and shuts back off when the main power turns back on.

Large standby generators can cost thousands of dollars; installation charges from a licensed electrician will also increase the cost. The portable generators run $500 to $1500 depending on the size of the generator. Generators get their rating by the maximum power output in kilowatts. The most common size for a portable generator is 5 kilowatts, costing under $1,000 and burns about a half of gallon of gasoline per hour. Generators also run on other types of fuel such as diesel, natural gas and propane.

Calculating what size generator you need is important. There are 1000 watts per one kilowatt, wattage ratings are listed on appliances, calculate all of the appliances you expect to operate during a power failure and double that number to avoid overloading your generator. Most furnaces run between 1800 to 3500 watts depending on make, model and size. If you plan to run your furnace with your generator than the higher watt permanent standby model is required.

Back up generators can also be very dangerous if not properly ventilated. Carbon monoxide fumes are an invisible and odorless gas produced by combustible engines. Never operate your portable generator indoors. Always operate your portable generator outside away from any windows and doors and run heavy-duty exterior extension cords to the power outlet of the generator.

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