How to control light circuit from two locations

A two-point control circuit is the most frequently used for many domestic and commercial lighting solutions. Two-point control circuits provide a cost-effective and simple option for switching a light from two distinct locations inside a household dwelling or switching a series of lights in a business environment. 

To control lighting circuits from a bidirectional location we have to use two 2-way switches (3-way switches) connected together to form an interchanging reaction that allows you to turn on or off the light circuit from two separate locations.

How to identify a two-way switch (three-way switch)

Looking at the switch body and counting the number of screws is a more reliable technique to identify a two-way switch. There are four screws on certain two-way switches (three-way switches). A green ground screw is one of the screws. Two of the screws (copper or bronze) are travelers. The term "common screw" refers to a single dark screw. Other three-way switches lack the ground screw and use three screw terminals instead.

Note that the names of these switches vary depending on where you are in the world. These are known as three-way switches in the United States and North America, but as two-way switches in the EU. I will leave the link  below to know where to buy these switches online for very cheap

Let's have a look at a basic circuit diagram that shows how to wire a two-point lighting circuit:

Two-way switches (three-way switches) are mostly utilized in the staircase and are placed near to stairs at the two ends. Turning the switch on and off at either end will change the state of the light to the opposite state.  

 

The connection can be done by following these steps:

1. The live conductor should be connected to the common side of the first two-way switch

2. Connect the travelers on both switches together, L1 to L1 and L2 to L2

3. Connect the common on the second two-way switch to the live terminal of the lamp

4. Complete the circuit by connecting the neutral conductor to the neutral terminal of the lamp. 

I just wanted to remind you that working with electricity is very dangerous and we have only covered the theory, so please do not undertake any electrical work unless you are qualified and competent.

Cheap Light Switch:

Three-Way Switch

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