Intermediate lighting wiring diagram

Two-way and intermediate lighting circuit. The wiring diagram above is what you need to memorise in order to wire the circuit on the day of the AMexam. It might look intimidating at first glance, but actually it is quite simple.

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 second switch ( intermediate ) and then to the third switch and then wired as shown in this diagram. Switch one is the switch that contains the live wire .

An intermediate lighting circuit is used when one circuit is to be turned on or off by three or more switches.

The single circuit may have one or more lights in it.

This type of circuit uses two of the two way switches and one or more of the intermediate switches. A wiring and circuit diagram is shown . It should be fitted between the first and the last switches on the circuit. If replacing an existing switch, note the location of the terminals and the colour and position of cable connections. All types of lighting circuits in old and new cable colours. 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).

Fig 2: Triple gang intermediate light switch. Intermediate light switch mechanism. Each of the gangs (or switches) above in Fig (of which there are three) work like this (Fig 3): There are four terminals, usually L Land L L2. This switch is specially designed for this purpose and must not be mistaken for . It is used when you have three or more switches controlling one light , the middle switch needs to be an intermediate light switch. On this circuit you would need the middle switch (eg the one at the top of the stairs) to be an intermediate switch.

The diagrams below shows the old cable colours. If the cables in your circuits are Brown and Blue please see Multi-point radial lighting circuit – new . How to isolate the lighting circuits and test that they are safe to work on. They are wired so that operation of either switch will control the light.

Make sure you always use the same size wire in your circuit. We are not electricians and have taken all the diagrams from the instructions that are supplied with the products we sell.