If you are describing this switch to an electrician or electrical supplier you should refer to it as a 1 gang intermediate light switch. This is only a wiring schematic and not the actual wiring method used for 3 way switch installations.

Technical Trendiswitch
3 way switch with 3 lights diagram uk. Two very old three way switches. This allows a single light to be turned on or off from any of the switchesthis page shows it wired in the new cable colours if your house has the old colours you want to go here. Connect the blue. Sometimes called a crossover switch for obvious reasons. Connect the line brown wire coming from the light together with the 3 coreearth cable black wire in to the l1 terminal of the two way switch. 3 way switch wiring diagram.
Take a closer look at a 3 way switch wiring diagram. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. This article explains a 3 way switch wiring diagram and step how to wire three way light switch electrical circuit we have to discuss about what are the three ways for wiring diagram as discussed below and how to connect all the lights and what are the different techniques to join such switches to getour own desired outputs as mentioned below. With these diagrams below it will take the guess work out of wiring. Electrical house wiring diagram. Below is a simple 3 way schematic that can be applied to all three way electrical light switch connections.
This cable consists of three cores brown grey and black which are all line colours and an earth wire. Here we have a 3 way switching lighting circuit sometimes called two way switching with intermediate. Wiring multiple lights on a 3 way switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. By rule of thumb you would stick with 8 to 10 outlets and or lights per breaker. Two very old three way switches are depicted in the photo above.
Uk so this fig 2 is what we call an intermediate switch so called because it is used in between two x 2 way switches to achieve 3 way switching clarified below under multiway switching. Wiring a 3 way light switch. This might seem intimidating but it does not have to be. Now this is of course they are 120 volts 60mhz usa or canada. The steps above describe installing a 3 way switch and provide a 3 way switch diagram utilizing one light fixture. Wiring a three way switch happens with the use of the 3 coreearth cable.
If you intend to add multiple lights with a 3 way switch use the 3 way switch for multiple lights diagram. 3 way switch schematic wiring diagram. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.