If you're planning to change or add switches throughout a home, it's worth thinking ahead about how many switches you need to ensure you get the right amount. Go from room to room and count how many lights need to be controlled. Then work out if any of these can be combined on a 2-gang, 3-gang or 4-gang switch and whether, in some cases, you need to control one light with multiple switches.

If we want to change an existing switch, then note down the position of the terminals as well as the position and connections of the cable. Terminals – These provide the entry points for the wires to be connected to either side of the switch. The switch will interrupt the flow of electricity through the live (Brown sheathed) wire. Intermediate switch working principle is similar to a DPDT namely double pole double throw switch. This switch works by allowing three switches for controlling a single light. This switch is used in a multi-story building otherwise on a landing. Because the arrangement of switches can be done on top of stairs, the bottom of stairs, and the end of the landing. In that, an intermediate switch is used in the middle of the 2 two-way switches. By using these switches, controlling light can be done from 3 different places. Intermediate Switch Wiring/Wiring Diagram Face plates have the terminals fixed to it which are usually screwed. The live and neutral are 22mm apart. To prevent something accidentally being inserted into the live parts of the plug, there are shutters (UK plugs) which only open if the top, earth ping is inserted. The light point can be controlled from three locations with the help of 2 two-way switches as well as an intermediate switch.

Choosing a Dimmer

Grid switches can be used to create combinations too. You may want to have a two way switch and an intermediate switch on the same plate. This can be created by attaching a two way switch module and an intermediate switch module to a grid frame. Intermediate Dimmer Switch White plastic switches are often the default switch people go for but consider if other colours and finishes would suit the décor better. For example, brushed or polished chrome or slate grey are perfect finishes to match contemporary décor. Or if the décor is more traditional, there’s antique brass or wood effects. Also, think about how the colours will complement or match other items in the room, such as appliances, door handles or window openings. And don’t forget, you can choose different colours and finishes for different rooms if necessary.

To help determine the gauge of the wire in your switch box, look at the amperage of the circuit breaker or fuse in the main electrical panel. Fifteen-amp circuits are usually wired with 14-gauge wire and 20-amp circuits require 12-gauge or heavier wire. This will either sit inside the wall, in the plaster or cut into the plaster board, or be mounted on top of the surface of the wall. Plastic tends to be used if the pattress is surface-mounted and metal when it is incorporated in the wall.Pattress – This is the box that contains the parts of the light switch. Make sure that you get the right size face plate to fit on the pattress that you have fitted It’s always important to do your research before buying switches to ensure you’re getting the right product for your needs. With these two products, you have the flexibility to install intermediate and 2-way switches that look like dimmers. Only one of these switches can be a dimmer but you can use VARILIGHT touch and remote dimmers, As we are dealing with electricity it is obligatory that we warn you about safety. We have a great project that helps you understand what you are allowed to do, what you cannot do and what are your obligations under the Building Regulations (Part P); Find out more about the electrical do’s and don’ts here.