Wiring A Two Way Light Switch Uk. 2 gang 2 way light switch wiring diagram uk. To switch from two locations you ll need 2 two way switches and wire them together in a particular way.
3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control. Two way switching allows you to control a light from two locations. When wiring a 2 way switch circuit all you re really doing is controlling the power flow switching off on to the load a light lamp outlet ceiling fan etc now a typical circuit will contain a 3 wire cable known as romex.
This method can be dangerous if the neutral from the ceiling rose is connected to an alternate junction box on a different circuit.
Each of the gangs or switches above in fig 2 of which there are two work like this fig 3. 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. In one switch position the com terminal is connected to l1. For two way switching you need a length of three core and earth cable long enough to reach from the existing light switch to the place where you intend placing the second light switch.
