Hello readers welcome to the new post. Here we will discuss Two Way Switching Explained – How to wire 2-way light switch. The 2-way switch light is a switch that is used in conjunction combination with another two ways light switch to on and off the light at two different points. The 2-way light switch also used as one one-way switch for lint control. Here we will over detsilas of working, features, circuit diagrams, and other features for the 2 way switch. Let’s get started with How to wire 2-way light switch.
What is SPDT Switches
- There are different types of switches used in circuits before getting working of two-way switches we must have an understanding of these switches.
- If we have to turn on the light and off from different two points, then use 2 Single Pole Double Throw or SPDT switches.
- The SPDT switch is known as a two-way switch in European countries and a three-way switch in North America.
- The SPDT switches come with three terminals. One terminal is used as input and two are output.
- Each terminal of the switch comes with a title. That is input terminal is used as common. Output terminals are known as Normally-Open and Normally-Closed.
- Operation of toggle or lever will result in common terminals making connections with normally open or normally closed points based on position.
Two way switching Circuit
Staircase lighting circuit
- Here we will discuss the two-way circuit switch for controlling the light switch.
- For this configuration, one switch is connected at the starting point of the staircase and the second switch at the top point. The ceiling light is at the midpoint of the stairs.
- To make a difference we define the down switch as switch 1 and up the switch as S2. Each switch can be used to on or off light.
Two Light Switches for One Light
- In this configuration, there are two 2 Way light switches used. That helps to on and off light from any switch. The circuit shown below defines the working of two light switches for one light.
When using a two-way light switch?
- The two-way light switch is used when two switches control one light such as in hallways, there we can have switches at both ends of hallways which are on and off light in hallways. We can control lights on and off from any end of light with two switches.
When we can use a one-way light switch?
- We can use a one-way switch when it is a single switch controlling the light in the room such as if we have one door in the lounge and have a light switch next to the door.
Three light switches controlling one light?
- If 3 switches control the same light such as downstairs in hallways, upstairs, and top of stairs, and another one connected at the end of the landing, then we will need a mid switch as an intermediate light switch.
How do two switches control one light bulb?
- The two separate light switches have features to control a single light with the use of certain electrical wiring and a three-way switch. The three-way switch connects two switches and lights, making an uninterrupted and controllable circuit with parts. Light switches can on or off light interrupting the curent flow in the bulb. For traditional light switch curent flow from main electrical one in the house to light fixture between the standard switch. The curent passes in a straight line from source to bulb and the switch interrupt one circuit for the curent flow to stop. But three-way switch configuration, there is an additional wire used that helps two switches make connections.
- First of all circuit wiring moves from the power base to the first light switch. After that extra code and standard wiring move from first 3 way switches to 2nd three way switches. At last wiring moves from 2nd switch to the lights. With two switches wired to each other make the new circuit. That different wiring in the three-way switch helps curent interrupts at any switch and does not have a connection to transfer current.
How to Connect 2-way Switch Wiring using Three-wire control
- It is a technique used to make a 2-way switch connection and is different from the two wire control methods. This method is normally used since it is better than a Two-Wire control system. Here is the circuit diagram of the way the switch circuit is shown. The common pin of these two switches is a short circuit terminal 1 of both switches is connected with phase wire and terminal 2 is connected to the light source. The other point of the light source is connected to the natural line of power supply.
- For the 3-wire control technique when switches have the same condition light will be off
- For the ON condition, the truth table of this circuit configuration is shown
|
S 1 |
S 2 |
Light source condition |
|
0 |
0 |
0 |
|
0 |
1 |
1 |
|
1 |
0 |
1 |
|
1 |
1 |
0 |
Here we can see that when both switches have the same condition light is off
Applications of Two-Way Switch
- It is mostly used in staircases.
- It is used in larger size rooms that have two entry or existing points.
- It is used to control AC operating devices like fans or lights from different points.
Read Also:
- Micro Switch its Types and How its Work Diagram, Working Principle
- What is Double Pole Double Throw (DPDT) Switch Working & its Applications
- What Is Double Pole Single Throw Switch – Working & Its Applications
- What is a Double Pole Switch? How its Work
- Difference Between Router and Switch
- MOSFET Digital Switching
Faqs
What is a two-way switch?
- The single switch controls a single light or circuit. two-way switch uses two switches to control light. It is used in larger rooms or staircases.
What is the difference between a two-way switch and a three-way switch?
- The three-way switches are used for connection with another three-way switch. Each has the power to interrupt current flow and off from different locations of the room.
What is a 3-way switch?
- The three-way switch is used to control ceiling light from two different points. Common features are that three-way switches exist at the top and bottom of the staircase or have three-way switches next to the door of the room at the entrance point.
What is single pole vs 2 way switch?
- Both single pole and double pole switches can be used as either single or double throw. The pole defines many distinct circuits switch can control a single pole switch can operate one circuit and a double pole switch can control two circuits.
What is a 4 way switch?
- The 4-way switch comes with a ground terminal that can control one fixture from at least 3 different points.
What are the 4 types of switches?
- The four main types of switches are. single pole single throw, single pole double throw, double pole single throw, or double pole double throw
