The hot from the power source connects to the 2 way switch sw1 where it can be switched to the hot terminal of the light lt1 and spliced through to lt2 via the cable c3.
2 way switch.
In this diagram the incoming hot wire attaches to the first switch s common dark colored terminal.
This method is commonly used now days as it is efficient than the two wire control system.
2 way switch 3 wire.
This is the new method to make a 2 way switching connection as it is slightly different from the two wire control method.
Where 0 represents the off condition and 1 represents the on condition.
Notice the black wire is the only wire that we are controlling through the 2 way switch.
How to connect 2 way switch wiring using three wire control.
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How to wire 2 way light switch in this video we explain how two way switching works to connect a light fitting which is controlled with two light switches.
The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch.
This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch.
The three terminals are usually named com l1 and l2 but sometimes com 1 way and 2 way are also used.
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Before proceeding an important component called a two way light switch is the main element of the 2 way switching irrespective of the type of wiring used.