2 Switch Wiring Diagram Home. This is a completed circuit. From the switch a three conductor cable continues to a ceiling light.
Coming to the com terminals the com terminal of the first switch is connected to phase or line or live. In position 1 when the switch is down or on com and l1 are connected together just like the one way switch. L1 terminals of both the switches are connected together and l2 terminals of both the switches are also connected together.
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.
Learn how to install a double switch or combination two switches. Let s assume the load you are controlling is a light. Coming to the com terminals the com terminal of the first switch is connected to phase or line or live. The electricity flows from the hot wire black through the 2 way switch shown in off position and then to the light and returns through the neutral wire white.
