The cable going to the light switch is connected as follows fig 2.
2 gang 1 way light switch wiring diagram uk.
A two way switch has 3 terminals.
Typically these terminals will be marked com and l1 sometimes l1 and l2.
When the switch is on both terminals are connected together.
3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control.
A one way light switch is quite easy to wire up.
2 gang 1 way light switch you don t see these as much now days as many manufactures only make 2 gang 2 way light switches that serve the same purpose you just don t use the third l2 terminal on each gang however i thought we would include it just in case you come across one.
Two way switching allows you to control a light from two locations.
Each of the gangs or switches above in fig 2 of which there are two work like this fig 3.
In position 1 when the switch is down or on com and l1 are connected together just like the one way switch in position 2 when the switch is up or off com and l2 are connected together.
There are two terminals in a one way light switch.
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.
Although technically it doesn t matter which way round you connect the wires it is best to stick to convention and connect the permanemt live from the supply to com and the switched live to the lamp.
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.
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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.
Connect the line brown wire to the l terminal together with the supply cable line wire and connect the blue wire with the brown slewing to the swl terminal together with the lamps line wire.
A common c l1 and l2.
Line diagram of a one way lighting circuit using in line method fig 1.