How do you hook up a 2 way light switch

This is a completed circuit. Now by understanding the diagram above, go up to the top diagram and by using the concept shown here, just use your mouse pointer on that diagram and follow the flow from black wire hot wire to the load and return through the white wire neutral. This should give you a good basic understanding how the 2-way switch circuit works and will help you in adding or changing a 2-way switch. So now that you have a basic concept of wiring a 2-way switch, let's look at the following 2-way switch diagrams to see which type of circuit scenario you have.

After you have pulled your switch out from the wall, the wires in the box and connecting to the switch should look like one of the following.

2 Way Switching

Wiring a 2-Way Switch How to wire a 2 way switch. Wiring a 2-way switch is about as simple as it gets when it comes to basic house wiring.


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First of all we need to go over a little terminology so you know exactly what is being discussed. Go to my Switch Terminology Page where I discuss the terms used for the different types of home electrical switches. It should also help in understanding the functions of each type of switch. Now a typical circuit will contain a 3-wire cable known as romex. The cable consist of a black wire, a white wire and a bare copper wire.

This simple diagram below will give you a better understanding of what this circuit is accomplishing. The condition of getting Output in ON condition is same as the Ex-or gate truth table which is given below:.

Two way light switching

It's a age old logic but still a mesmerizing thing to people who doesn't belong to this domain. Thanks for explaining it so clearly.

Wiring a 2-Way Switch

In the electrician's trade, the two switch location load control is termed a '3-way' system. The wiring schematic conforming to the adopted International Code Council requires a different physical configuration for safety compliance than what is demonstrated in this article. Thank you for this acticle. You solved a problem for me.

How to Connect a 2-Way Switch (with Circuit Diagram)

Does anyone know how to do this with an led mech like the clipsal 30PBL? I'd like the mech led off when that switch is powering the light.

The Best 3 Way Switch Explanation Ever!

It is a good explaination thanks. The condition of getting Output in ON condition is same as the Ex-nor gate truth table which is given below: How to Connect 2-way Switch Wiring using Three wire control This is the new method to make a 2-way switching connection as it is slightly different from the two wire control method. In 3-wire control method when switches are in same state the light will be in OFF state as shown in circuit below: The condition of getting Output in ON condition is same as the Ex-or gate truth table which is given below:

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