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Intermediate switch connection and wiring diagram

Intermediate switch

An intermediate switch is a switch which permits the control of a lighting point from three positions. In order to control this lighting point from the three positions, the intermediate switch is connected together with two other 2-way switches.
Application: it can be used in lighting a room or hall having 3 entrances, it can also be used in long corridors and staircases. We shall be looking at these connections.

Connection diagram of intermediate switching

Below is an illustration of the connection.
connection diagram of an intermediate switch

The brown lines indicated on the diagram are the switching contacts.
The switch labelled 2 is an intermediate switch. The figure below is the configuration of an intermediate switch.

intermediate switch contacts layout

The switch labelled 1 and 3 in the first diagram are two-way switches. Click here to know more about two-way switches.

ON and OFF positions of intermediate switching

  • ON positions
intermediate switch ON positions


  • OFF positions


    • intermediate switch OFF positions

    Staircase wiring layout using an intermediate switch

    We have seen how to connect an intermediate switch. One of it's application is in staircase lighting. Below is a schematic layout of the staircase lighting.
    intermediate switch staircase wiring

    Boom Boom Boom.. Hope you can now connect an intermediate switch by studying this interesting article with suitable diagrams made for easy understanding. Remain connected to the blog. Thank you

    By EKETECH

    Related post:

    wiring a teleruptor








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    Location: England, UK

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