How To Wire A 3 Way Light Switch Diagram Uk

A one way light switch has two terminals which is a common marked as com or c. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. Sometimes called a crossover switch for obvious reasons.
how to wire a 3 way light switch diagram uk

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If you are describing this switch to an electrician or electrical supplier you should refer to it as a 1 gang intermediate light switch.

How to wire a 3 way light switch diagram uk. The other terminal is marked as l1 and is the output to the light fixture. In this diagram power enters the fixture box. This is the 3 wire cable which you must have to wire a 3 way light switch. Uk so this fig 2 is what we call an intermediate switch so called because it is used in between two x 2 way switches to achieve 3 way switching clarified below under multiway switching.

3 way light switching new cable colours here we have a 3 way switching lighting circuit sometimes called two way switching with intermediate. Wiring a one way switch. This allows a single light to be turned on or off from any of the switchesthis page shows it wired in the new cable colours if your house has the old colours you want to go here. Connect the blue wire with the brown slewing coming from the light to the l2 terminal together with the 3 coreearth cable grey wire.

This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. The black hot wire connects to the far right switchs common terminal. The l2 terminal is unused. 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.

A metal light switch must be earthed as seen below. 3 way switch wire diagram power to light fixture. The electrical system consists of the line from the pole a meter where electrical usage is tallied a main circuit breaker panel sometimes called load centers and in older homes fuse. The common is for the live wire that supplies the input voltage to the switch.

To wire a 3 way light switch youll need 2 3 way light switches 2 2 wire non metallic cables 1 3 wire non metallic cable and 2 6 inch grounding wires. Connect the line brown wire coming from the light together with the 3 coreearth cable black wire in to the l1 terminal of the two way switch. The exact cable you use depends on the gauge of the existing wiring in the rest of the circuit but in most cases the correct cable will be either 12 3 or 14 3. Heres how to wire a three way switch with easy tips from the family handyman.