Have you seen this MEP002A / MEP003A wiring diagram for 120 volt single phase hookup. Please note that a licensed electrician is always recommended to prevent injury or damage to equipment. Also note that both the phase selector switch and meter read-out switch on the control panel must be set correctly BEFORE starting the generator. Never move the phase selector switch while unit is running and always screw the safety cover on the phase selector switch to prevent tampering. If the configuration will be used for long-term, you may even want to remove the knob to prevent any change in the phase/voltage selection settings (there are 3 options).