Rated 5 out of 5 by beazer from great for stairs light wanted to switch stairs light from 3 places and the intermediate switch needed to be on the same plate as another switch and no one makes such a thing. This circuit is wired the same way as the 3 way lights at this link.

Intermediate Switch Wiring Diagram Pdf Thedamesound Com
Mk intermediate switch wiring diagram. Construction working of intermediate switch. Explanation of wiring diagram 1. Switch wiring shows the power source power in starts at the switch box. In a previous video i showed how a two way. If replacing an existing switch note the location of the terminals and the colour and position of cable connections. The four terminals of intermediate switch construction and its operation are shown in fig below.
Socket outlets switches and other mk wiring accessories can be mounted in a variety of mk trunking systems. Basic electricians pouch of hand tools and a. Intermediate switch related circuit diagrams and wiring diagrams intermediate switch wiring diagram old cable colours intermediate switch wiring diagram new cable colours 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. Circuit electrical wiring enters the switch box. Removed cover of old switch and old colour coding. Nice mk quality and very impressed that screwfix had 2 of this rather specialised item in stock locally.
Red yellow and blue wires. In an intermediate switch there are four terminals by which it changes the flowing of electric current from one circuit to another see fig 1 2 and also known as three way switchit has the ability to on and off the electric supply by two ways. To wire a three way lighting circuit you will need 2 two way switches and an intermediate switch. Replace broken switch with a new one. The black wire power in source attaches to one of the switch screw terminals. Switch used as 1 way for outside light and 2 way.
Three wire cable runs between the switches and the outlet. Intermediate switches can be used for 1 and 2 way switching. This video also shows how an intermediate switch works. The diagram shows the common method of wiring an intermediate switch into a two way light switch circuit. 3 way switched outlet wiring. 442 wiring devices mkelectriccouk features l moulded on indicator flash on plastic switches will not rub off totally safe.
So got this a standard grid switch a frame and a front plate to make up my own. The source is at the sw1 where the hot is connected to. In this diagram two 3 way switches control a wall receptacle outlet that may be used to control a lamp from two entrances to a room. Wiring devices technical. Do you have a simple diagram of what goes where for the new switch.