Info from: http://www.ruihongshop.com/shop/pro...d=323&osCsid=80a40e658de09f36b902ea6221d20988</PRE> </PRE> Here is a chart of how many watts are needed to run most common appliances:</PRE> <TABLE cellSpacing=1 cellPadding=0 width=450 border=0><TBODY><TR bgColor=#cccccc><TD width=161>Device</TD><TD width=132>Typical Wattage</TD><TD width=153>Surge Wattage</TD></TR><TR><TD>Light bulb</TD><TD>60 watts </TD><TD>60 watts surge</TD></TR><TR><TD>Fan</TD><TD>75 watts </TD><TD>150 watts surge</TD></TR><TR><TD>Small black/white television</TD><TD>100 watts </TD><TD>150 watts surge</TD></TR><TR><TD>Color television</TD><TD>300 watts </TD><TD>400 watts surge</TD></TR><TR><TD>Home computer and monitor</TD><TD>400 watts </TD><TD>600 watts surge</TD></TR><TR><TD>Microwave oven</TD><TD>750 watts </TD><TD>1,000 watts surge</TD></TR><TR><TD>Furnace fan</TD><TD>750 watts </TD><TD>1,500 watts surge</TD></TR><TR><TD>Refrigerator</TD><TD>1,200 watts </TD><TD>2,400 watts surge</TD></TR><TR><TD>Well pump</TD><TD>2,400 watts </TD><TD>3,600 watts surge</TD></TR><TR><TD>Electric water heater</TD><TD>4,500 watts </TD><TD>4,500 watts surge</TD></TR><TR><TD>House A/C or heat pump</TD><TD>15,000 watts </TD><TD>30,000 watts surge</TD></TR></TBODY></TABLE> ***These numbers are only estimates. They will vary based on the wattage rating of the appliance being used.