Diagram Common Light Switch Wiring Uk

You can also see that another live and neutral wire go to the next light switch.

Diagram common light switch wiring uk. Instead of taking the feed wire from the consumer unit to the ceiling rose it is taken to the switch. A metal light switch must be earthed as seen below. A two way light switch can also be used in in place of a one way light switch in this instance the red wire from the feed cable is connected to the common c terminal and the red wire going to the light is connected to the l1 terminal. We have and extensive collection of common lighting arrangements with detailed lighting circuit diagrams light wiring diagrams and a breakdown of all the components used in lighting circuits.

When you re wiring decorative light switches such as chrome or stainless steel etc you ll find that the switch will also have an l2 terminal which means it s a two way switch. 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. The permanent live wire is wired into the switch and the switched live into the switched live terminal. For wiring a two way switch 3 core earth cable is used.

This is not always the case. The cable that comes from the switch to the light has a black and a red wire both of these are live wires. The only one of the three wires to keep track of and identify if replacing a three way switch is the wire connected to the common terminal. The black wire should have a piece of red sleeve or tape around it to indicate this.

This cable consists of three cores brown grey and black which are all line colours and an earth wire. The most common mistake made when changing a ceiling light is connecting black to black and red to red. The common is for the live wire that supplies the input voltage to the switch. All the light wiring diagrams are available in the old and the new cable colours to avoid confusion.

The other terminal is marked as l1 and is the output to the light fixture. Connect the blue wire with the brown. The l2 terminal is unused. The neutrals are connected together using a terminal connector.