Portable Generators For Residential Use Facts & Safety Requirements

If you are thinking about buying a portable generator for back-up electricity, here are some facts you should know before you buy. … by permanent or portable electric generators from … A portable electric generator can be a valuable tool—but can also be extremely dangerous if not used correctly. If you are thinking about buying a portable generator for back-up electricity, here are some facts you should know before you buy. Safety notes Connecting a generator to another power source could damage your appliances and seriously …

How do you select a generator? Portable generators come in many sizes. Following these steps will help you select the right size for your needs. 1. Determine the “constant wattage. ” The energy you will need on a constant basis to keep the appliances and lighting powered by the generator during an emergency. This is your “constant wattage. ” For help determining wattage information, see the “Calculating Energy Usage” information below. 2. Determine the “start-up wattage. ” Knowing the “constant wattage” alone of your appliances is not good enough. Appliances with motors, such as refrigerators, freezers and air conditioners, can require two to three times their normal wattage when the motor starts up. The generator you pick must have a surge rating that meets or exceeds your added “start-up wattage” needs. To determine your “start-up wattage, ” identify the appliances with motors that you will run with your generator. Double the “constant wattage” of these items, then add up the totals. If in doubt, contact the manufacturer of your generator for guidance. Match voltage ratings. Most appliances are rated at 120-volts, but some larger electric appliances, such as ovens, clothes dryers and well pumps, are rated at 240-volts. Portable generators may be rated at 120-volts only, or a combination of 120- and 240-volts. Make sure the generator you choose matches the voltage ratings of the items you want to run. 3. Ensure your generator is rated to provide power at a frequency of 60 hertz.

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