How to Wire a Light Switch
The wiring method depends on whether you need a one-way, two-way, or intermediate switch. For the full breakdown of all three, along with double sockets, grid switches, and ceiling roses, see our Complete Wiring Guide.
Which type of light switch do I need?
If a single switch controls the light on its own, you need a one-way switch. If two switches control the same light from different locations — such as at the top and bottom of a staircase — you need two-way switches. If three or more switches control the same light, the switches in the middle need to be intermediate switches.
Full wiring detail for each of these, including terminal labelling, is covered in our Complete Wiring Guide.
Always use a qualified electrician
Wiring a light switch incorrectly is dangerous. Always have electrical work carried out or checked by a qualified, registered electrician.
Related guides: The Complete Wiring Guide and what size back box do I need?
