Wiring a 3 way light switch.
2 way light switch wiring diagram uk.
Schematic diagram of new wire 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.
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.
There are several ways to wire two way switching.
Line diagram of a one way lighting circuit using in line method fig 1.
A one way light switch is quite easy to wire up.
There will be a com common terminal a l1 terminal and a l2 terminal.
With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
3 way light switching new cable colours 3 way light switching old cable colours before you start safety first.
In position 2 when the switch is up or off com and l2 are connected together.
The way i show allows you to fairly easily add a second two way switch to an existing light switch by simply wiring them together in a certain way.
To switch from two locations youll need 2 two way switches and wire them together in a particular way.
The other end of the lamp is connected with neutral line of ac power supply.
A two way switch uk schematic diagram of old wire colours.
Connect the blue wire with the brown slewing coming from the light to the l2 terminal together with the 3 core earth cable grey wire.
The next length of the twinearth cable will run from the light to the first two way switch.
Below is the way i like to do it.
The red wire from the feed cable is connected to the top terminal the red wire going to the light is connected to the bottom terminal the.
Pin1 of both the switches are connected with the phase or live wire and pin2 of both the switches are connected with the one end of the lamp.
Connect the line brown wire coming from the light together with the 3 core earth cable black wire in to the l1 terminal of the two way switch.
3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control.
As you can see in the schematic diagram of 2 way switch circuit below the common of both the switches are short circuited.
2 gang 2 way light switch wiring diagram uk.
2 way switch 3 wire system new harmonised cable colours 2 way switching 3 wire system old cable colours 2 way switching two wire control 3 way light switch using a two wire control.
Two way switching with the old wiring colours.