These are typically labelled com l1 and l2 some may label the l1 and l2 positions as 1 way and 2 way. A one way light switch has two terminals which is a common marked as com or c.
2 Way Switch Home Electrical Wiring Electrical Wiring Diy
Wiring a 2 way light switch uk. The switch wiring is all the same but the switch wire cable c leads up to a different set up. Two way light switches are required for two way switching these can be identified by looking at the terminals on the back of the switch. In the other switch position it changes over so that com is connected. Wiring a one way switch. Wiring a 3 way light switch. A two way light switch is a simple single pole changeover switch with three terminals.
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. For wiring a two way switch 3 coreearth cable is used. Two way switching with the old wiring colours. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. To switch from two locations youll 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 other terminal is marked as l1 and is the output to the light fixture. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. There will be a com common terminal a l1 terminal and a l2 terminal. Two way switch can be operated from any of the switch independently means whatever be the position of other switchonoff you can control the light with other switch. A commonc l1 and l2. This cable consists of three cores brown grey and black which are all line colours and an earth wire.
There is a chance that if your house has these old wiring colours the switch drops may be from a loop in loop out radial lighting circuit done with junction boxes rather than ceiling roses as shown in fig 2. In one switch position the com terminal is connected to l1. A two way switch has 3 terminals. Two way switching allows you to control a light from two locations. The common is for the live wire that supplies the input voltage to the switch. Wiring a two way switch.