By changeover switch, if you mean forward reverse switch, the correct electrical terminology you should be searching is, wiring of an electrical drum switch.
Chat with our AI personalities
You have a 3 way switch. Your black wire is the hot wire. Your green wire is the ground wire. Your red and white wires go to the light and other switch. You should have gotten a wiring diagram with your switch.
To wire a timer switch to a 3-way light switch, you will need to identify the common wire on the 3-way switch and connect it to the common terminal on the timer switch. The two traveler wires on the 3-way switch should be connected to the other terminals on the timer switch. Make sure to follow the manufacturer's instructions and turn off the power before working on the wiring.
A 14-3 wire can be used to connect a switch and power source by assigning the red wire as a traveller wire between two switches, the black wire as the hot wire, the white wire as the neutral wire, and the ground wire as the grounding wire. This configuration allows for a two-way switch setup.
The two way switches work in pairs. We find most of them in our houses where the light bulb can be operated by two switches each at the far end to the other. Each switch consists of three terminals two of which are connected. When one switch is open and the other is closed then the bulb glows and viceversa
The common wire is typically black and goes on the black screw terminal of a wall switch. If the wire is white, it should be reidentified as a hot wire with black tape before connecting to the switch.