Generac is one of the United State's leading producers of generators and other back-up power supplies. In addition to building the power supplies, Generac also manufactures accessories such as transfer switches. An automatic transfer switch automatically swaps to a back-up power supply when the electricity to the home is not functioning correctly. Most Generac automatic standby generators come with a pre-wired automatic transfer switch. This means the only wiring necessary will be to connect the transfer switch to your home. Call your local codes office to make sure it is legal for you to install your own transfer switch. Some locations require the work be done by a professional or require an inspection after the installation.
Voltage between red and white terminals is volts AC Voltage between black and white terminals is volts AC Voltage between red and black terminals is volts AC. Voltage between white and green should be zero 0 volts, if not, then you have a grounded hot wire short circuit in some appliance or wiring in the house. If you have never done any wiring before, call an electrician. Never forget that some of the wires will still be hot even after the main disconnect is off. Use insulated screwdrivers on the circuit breakers.