Diagram Double Light Switch Wiring Common. Here is a wiring diagram for a light switch four way light switch. See 4 way switch for how it is wired.
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Though it is not difficult to wire a double switch careful attention to safety is crucial to prevent injury. As the diagram at electrical 101 shows the line cable is all you need to supply power to a pair of switches in a single electrical box. This is only way to have a common terminal.
Referring to this diagram above the common terminal goes to the red wire to the lamp in the left switch and the black wire on the right side switch.
It is possible that you may encounter a double pole light switch within the home but these are not very common in a residential setting. Though it is not difficult to wire a double switch careful attention to safety is crucial to prevent injury. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2 way switch and a black wire from the other screw on the 2 way switch going to the load light ceiling fan etc. See 4 way switch for how it is wired.
