At a glance 3 way switches look the same as the common single pole switch but instead of having only two screws on which to make your connections they have two connections on one side and one on the other. Two way switching allows you to control a light from two locations.
3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control.
Diagram for two 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. A 2 way switch wiring diagram with power feed from the switch light. A common c l1 and l2. Three way switches have become very popular because it adds convenience and ease to lighting in large rooms hallways and staircases. You can observe in the schematic that both the com terminals are connected together. After you have pulled your switch out from the.
Do you need to know how a two way switch works before you check out the circuit diagrams. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. To switch from two locations you ll need 2 two way switches and wire them together in a particular way. This is very useful in a number places particularly hallways and stairs. The electrical symbol indicates where power enters the circuit. The following is the simple schematic of a three wire 2 way switch wiring.
2 way switching means having two or more switches in different locations to control one lamp they are wired so that operation of either switch will control the light. The l1 terminals of both the switches are connected to line or phase or live of the ac supply. The power source comes from the fixture and then connects to the power terminal. It is essentially the same circuit diagram as the one on the top of this page but with the utilisation of modern cable arrangements for domestic and commercial wiring. A two way switch has 3 terminals. Here is our selection of two way switch circuit diagrams.
Simple 2 way light switch with the power feed via the switch. This arrangement is often found in stairways with one switch upstairs and one switch downstairs or in long hallways with a switch at either end. Two way switch lighting circuit diagrams. If you look inside an existing wired in two way switch you will see quite a few wires of. If you need to know how to wire a two way switch then this is the place to start. You will see that there is a hot wire that is then spliced through a switch and that then goes to the hot terminal of the light.
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. This circuit diagram describes the wiring a two way switch in such an arrangement so that the flat twin earth and 3 core earth cables are not broken or interrupted anywhere between the components of the circuit.