I started my backup power project by purchasing a 4kW gas generator. Since gasoline may run out or be unavailable in a disaster I added a natural gas adapter. I wondered if natural gas would continue to flow in the event of a large scale grid outage so I contacted CPS Energy. Their engineer confirmed that gas service would be likely to continue because the natural gas pumping stations run on the natural gas in the line. That's a damn good idea!
In order to ensure that the generator is operational I run a test at least once a month. It is a good idea to run gasoline engines often because if the gas sits in the carburetor too long it will gum up the float valve or the main jet. If this happens then you will spend a lot of time cleaning the carb when you really need power most.
To bring the power into the house I installed a six circuit changeover switch. This switchbox allows me to toggle between line power and generator power and includes two power meters to show how much energy is being drawn.. These meters help me to ensure I don't overload the generator.
I chose the most important circuits in the house that will need power in an emergency. The kitchen circuit includes the refrigerator and microwave. The Entertainment circuit includes the TV and Satellite box. Other circuits include lighting and accessories.
The environmental circuit includes the central heater blower. This generator cannot run the central air conditioner but can operate the gas heater should the outage occur in the deep winter. It CAN run my emergency portable air conditioner in case summer is beating down on us.
I'm all set. If there is ever a large scale outage, come to my house. We'll watch TV and be comfortable.
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