Wiring a three way switch happens with the use of the 3 coreearth cable. First run a 2 wire cable from the wall power to the black screw on 1 of the switches.
3 Way Light Switch Wiring Diagram Uk Diagram Base Website
Wiring a three way switch uk. In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. When wiring a 3 way switch circuit we will be using a 3 wire cable known as romex coming from the source such as the breaker box. Each of the gangs or switches above in fig 2 of which there are three work like this fig 3. The principle is that the switch will have one main input terminal and two output terminals. In position 1 when the switch is down or on com and l1 are connected together just like the one way switchin position 2 when the switch is up or off com and l2 are connected together. Take a closer look at a 3 way switch wiring diagram.
The system also requires three way switches. In each position onoff the switch will connect the input to only one of the outputs. Uk so this fig 2 is what we call an intermediate switch so called because it is used in between two x 2 way switches to achieve 3 way switching clarified below under multiway switching. This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. See the description of each one of them below.
To wire a 3 way light switch youll need 2 3 way light switches 2 2 wire non metallic cables 1 3 wire non metallic cable and 2 6 inch grounding wires. Sometimes called a crossover switch for obvious reasons. This cable consists of three cores brown grey and black which are all line colours and an earth wire. Three way switches require a three wire cable. In other words the current will always flow from one input pin to either output pin. With these diagrams below it will take the guess work out of wiring.
The cable should also have a ground wire or a total of four wires in the cable. A typical three way switch will have you guessed it three terminals. 3 way switch wiring diagram. If you are describing this switch to an electrician or electrical supplier you should refer to it as a 1 gang intermediate light switch. 3 way switch 2 3 way wire which has black white and red coated wires and of course a copper ground wire electrical boxes of appropriate size to hold 3 way switch and wire wire cutters and strippers standard electrical tape a non contact voltage tester 3 way light. Connect the line brown wire coming from the light together with the 3 coreearth cable black wire in to the l1 terminal of the two way switch.
The power wire the neutral wire and the traveller or switch wire. This might seem intimidating but it does not have to be. Then a 4 wire cable going between the two 3 way switches and then a 3 wire cable going from the switches to the load. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch.
Gallery of Wiring A Three Way Switch Uk
