In this step by step tutorial we will be showing the portable generator wiring and connection diagram to the home supply and main distribution boardwe will be using automatic changeover switch also known as automatic transfer switch ats manual changeover switch mts or manual transfer switch to connect the generator to a house. You may have to shift the position of the panel cover.
How To Install A Stand By Generator This Old House
Wiring diagram for generator to house panel. For information about the installing the generator hookup for your house read on. If utility power fails the switch connects the generators power to the circuits in the generator sub panel. Reinstall the panel with all the breakers in the off position. Turn the generator breaker to the off position and drop the slide so it can not be turned on. When utility power is functioning the wires from the circuit breaker in the main electrical distribution panel are connected to the generator sub panel. The generator is an additional power source or a backup source.
The maximum power you can provide to your house with such a scheme will be determined by the ratings of two 120240v circuit breakers. For example if your genset has 30a breaker and your electrical panel has a 20 amp breaker for the drier then. Cables or legs from the outside meter will remain hot or energized. In this video this old house host kevin oconnor shows how to keep the electricity flowing during outages by installing a transfer switch for a portable generator. You need to remember that when you turn off the main breaker conductors aka. You want to keep the wiring dedicated to the need of the generator since its purpose is for additional or emergency power.
For a generator 240 volt connection it is best to wire it direct and with only 240 capabilities. Once the generator is running go to your breaker turn off the switch for the utility main and turn on the switch for the generator main. Installing a generator interlock involves working inside the load center aka. Use the transfer switchs wiring harness to connect the unit to the circuit breaker. Turn off the power to the house at the main electrical panel and connect the wires coming from the transfer switch to the breakers in the. Touching them directly conductors or indirectly lug nuts will result in serious injury or death so extreme caution is.
Collection of standby generator wiring diagram. It reveals the components of the circuit as streamlined forms and the power as well as signal connections in between the tools. You can wire a 240 volt circuit to provide both 120 and 240 volts. Ensure the interlock allows for the on position. A wiring diagram is a simplified traditional pictorial representation of an electric circuit. The wires should be drawn through 1 of 3 knockouts located on the underside of the switch.
They should join the circuit breaker through a knockout found at the bottom of the box. In addition we may also wire a portable generator to home. The one that is in your generator and the one that is on the drier line whichever is lesser. With the main in the off position turn the generator breaker to the on position. Figure 5 wiring diagram of a manual transfer switch in the on position. Next flip the breakers on the system that you installed one by one.
Mount the transfer switch to wall beside the existing main electrical panel.