The common is for the live wire that supplies the input voltage to the switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
Three Way Light Switching Light Fitting
One way switch wiring diagram uk. A piece of brown sleeving is used on the blue wire as both wires are live. Remove the existing socket or switch from the wall if replacing. Wiring a 3 way light switch. There are two terminals in a one way light switch. Two way switches and three way switches operate the same way and have the same connection points they just have different names in the uk which are common l1 and l2. The cable going to the light switch is connected as follows fig 2.
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. Although technically it doesnt 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. A one way light switch is quite easy to wire up. Wiring a one way switch. A one way light switch has two terminals which is a common marked as com or c. Always use the correct type of cable that is rated appropriately.
How to wire a one way lighting circuit in this tutorial i show how to wire a one way light switch i show how a 1 way and 2 way light switch works i explain how to wire a ceiling rose how to. When the switch is on both terminals are connected together. One wire connects to com and the other wire to l1. In the united kingdom some electricians use an alternative method for wiring two way switches as depicted in the above wiring diagram. Uk two way switch wiring diagram. Line diagram of a one way lighting circuit using in line method fig 1.
Typically these terminals will be marked com and l1 sometimes l1 and l2. The red wire from the feed cable is connected to the top terminal the red wire going to. The terminal layout may vary from one socket or switch to another therefore carefully check the location of the terminal connections before wiring. The other terminal is marked as l1 and is the output to the light fixture. Remove any plaster debris and dust from the inside of the wall box. One way switching metal switches as with the plastic switch.
One way lighting circuit using in line switching.