Light Wiring Diagrams

3 way light switching (old cable colours)

here we have a 3 way switching lighting circuit (sometimes called two way switching with intermediate). This allows a single light to be turned on or off from any of the switches. This page shows it wired in the old cable colours if your house has the new colours you want to go here:

3 way switching (new cable colours)

This is very similar to the two way switching circuit but with and additional intermediate switch introduced into the three wire control cable that links the two end switches.

The circuit consists of a two way switch at each end (top and bottom switches in Fig 2) and an intermediate switch in the middle. All three switches are connected together by a three core and earth control cable. Notice that the wire connected to the COM terminals is looped straight through the intermediate switch using a cable connector.

All earth wires should connect to the earth terminal in the switch back-boxes and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate (see note A on Fig 2)

Four way switching and more

This circuit can be extended to four, five way switching by adding additional intermediate switches (wired as shown in fig 2) anywhere along the control cable.

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Tags: 3 way lighting circuit, 3 way switch, electrical wiring, how to wire a light, how to wire a three way switch, intermediate light switch wiring, intermediate switch, intermediate switch wiring, Light wiring diagram, lighting circuit, lighting wiring diagram

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3 way light switching (new cable colours)

here we have a 3 way switching lighting circuit (sometimes called two way switching with intermediate). This allows a single light to be turned on or off from any of the switches.This page shows it wired in the new cable colours if your house has the old colours you want to go here:

Three way switching (old cable colours)

This is very similar to the two way switching circuit but with and additional intermediate switch introduced into the three wire control cable that links the two end light switches.

The circuit consists of a two way switch at each end (top and bottom switches in Fig 2) and an intermediate switch in the middle. All three switches are connected together by a three core and earth control cable. Notice that the wire connected to the COM terminals is looped straight through the intermediate switch using a cable connector.

All earth wires should connect to the earth terminal in the switch back-boxes and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate (see note A on Fig 2)

Four way switching and more

This circuit can be extended to four, five way switching by adding additional intermediate switches (wired as shown in fig 2) anywhere along the control cable.

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Tags: 3 way lighting circuit, 3 way switch, electrical wiring, how to wire a light, how to wire a three way switch, intermediate light switch wiring, intermediate switch, intermediate switch wiring, Light wiring diagram, lighting circuit, lighting wiring diagram

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1 gang intermediate light switch

The intermediate light switch is used where three or more switches control one light and used in conjunction with two two way light switches to achieve this

Light switch mechanism

There are four terminals, usually L1, L1 and L2, L2. In one position, L1 and L2 are connected in pairs. In the other position, alternate pairs are connected.

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Tags: electrical switches, Intermediate light switch, intermediate switch wiring, light switch

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2 gang intermediate light switch

The intermediate light switch is used where three or more switches control one light and used in conjunction with two two way light switches to achieve this. It is effectively two single gang intermediate switches on one face plate.

Light switch mechanism

Each of the gangs (or switches) above in Fig 2 (of which there are two) work like this (Fig 3): There are four terminals, usually L1, L1 and L2, L2. In one position, L1 and L2 are connected in pairs. In the other position, alternate pairs are connected.

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Tags: 2 gang, 2 way, electrical switches, Intermediate light switch, intermediate switch wiring, light switch

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3 gang intermediate light switch

The 3 gang intermediate light switch is used where three or more switches control one light and used in conjunction with two two way light switches to achieve this. It is effectively three single gang intermediate switches on one face plate.

Switch mechanism

Each of the gangs (or switches) above in Fig 2 (of which there are three) work like this (Fig 3): There are four terminals, usually L1, L1 and L2, L2. In one position, L1 and L2 are connected in pairs. In the other position, alternate pairs are connected.

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Tags: 3 gang, electrical switches, intermediate switch wiring, light switch, Triple gang intermediate light switch

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