They are wired so that operation of either switch will control the light. UK electrical wiring colours have changed in the past so it is essential you can tell difference between old wiring colours and new colours. In this easy follow guide learn about the different types of electric cables and the new standard wiring colours and what each old black and red wire colour has now changed to. Please also see our project on the New Wiring and Cable Colours.
See also, our lights and switches, our wiring in wall lights and also our electrical safety projects.
For two and three way lighting diagrams, which can be identified by additional yellow and blue wires within the lighting switch cables , follow the link.
It is best to, but if sleeved or otherwise permanently identified then other colours can be used as cable colours.
Yes, twin and earth can be used for switch drops with the blue conductor sleeved brown or otherwise indicated by brown tape for example. The lights they control should take power from the same circuit, but if yours are incorrectly wired and take power from different circuits, there will be live cables at each switch position when one circuit is isolated. There is more than one method of wiring multi-way lights.
If yours does not match the system shown here, that . Three core and earth cable is required to install two or three way switching and this should be run from the first light switch to the second and then wired as shown in this diagram. Switch one is the switch that contains the live wire and switched live wire. The diagram shows single colours only. In real life these wires would . Here we will explain how the most common lighting circuit. All types of lighting circuits in old and new cable colours.
If your circuit has the new cable colours see: Two-way switching (wire control, new cable colours ). In this state the lamp is off, changing the position of either switch will switch the live to the lamp turning it on. Two way switching - Plastic switches. NB In light switches you are actually switching the live part of your circuit only so all of the cables (except the earths) even if they are different colours are . This page shows it wired in the old cable colours if your house has the new colours you want to go here: way switching (new cable colours ). Ceiling rose wiring diagram - two way switching new colours.
Understanding domestic electric lighting circuits. Please note that all electrical wiring and installation details given on diydata.
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