The one gang two switch diagrams are shown below. The one gang two-way switch is used when two switches control the single bulb. In the above schematic diagram, the status of the light is off, but the light turns on when the switch is toggled. Similarly, the light is OFF when the first switch COM terminal is connected with the L 2 terminal and the second switch COM terminal is connected with the L 1 terminal. The light is OFF when the first switch COM terminal is connected with the L 1 terminal and the second switch COM terminal is connected with the L 2 terminal. The light is ON when the COM terminal of both the switches is connected with L 1 or L2 terminals. This configuration is similar to the EX-NOR gate in digital electronics.
The two-wire control two-way switch is shown in the below figure. The L 1 and L 2 terminals of both the switches are connected together. The first switch COM terminal connected to phase and second switch COM terminal is connected to one end of the bulb and the other end of the bulb is connected to neutral AC supply. The two-wire control two-way switch mostly will find in some of the industrial settings and old homes. Two Way Switch Front and Back ViewĪlternative Method of Two Way Switch Wiring The two-way switch front and the back view is shown in the below figure. This is the function of two way switch wiring. Similarly, the light is ON when the first switch COM terminal is connected with the L 2 terminal and the second switch COM terminal is connected with the L 1 terminal. The light is ON when the first switch COM terminal is connected with the L 1 terminal and the second switch COM terminal is connected with the L 2 terminal. The light is OFF when COM terminals of both the switches are connected with L 1 or L2 terminals.
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