Also keep in mind that except for lights and electronics such as TVs and stereos, most household appliances have a starting current that is much higher than the running current. When sizing your generator, you must allow for the starting currents of air conditioners, fans, pumps, etc. If your primary interest is keeping food from spoiling during a long outage, this should be enough. Also, if you are not on city water and sewer, you may consider your well pump and septic system as basic appliances. All these items have large starting current requirements, often six or more times the running current.
Air conditioners are particularly heavy energy users.
Again, check the nameplate on your appliances. These items have relatively low wattage requirements compared to the appliances listed above, but they can also be easily damaged if you overload your generator. Note that while computers don't require much wattage, most printers are heavy energy users.