Copper News

Renovating with trunking and installation ducts

Smaller renovations and extensions to the electrical installation in existing homes are not always easily and aesthetically accomplished. Grinding or cutting into walls to install additional wiring and cables is usually out of the question because wallpaper, painted walls, panelling, floors and ceilings may not be damaged. The solution to this problem is the use of so-called trunking systems and installation ducts.

Image: Legrand

Let’s examine the possibilities.

Trunking systems

Numerous manufacturers have trunking systems in their product range. They are mostly used in existing homes where smaller renovations or extensions to the electrical installation are needed. Sometimes, they are installed on a wall. These are then placed against the wall, straight onto the floor, as a replacement for conventional wooden or stone skirting boards. The wiring can be easily hidden away in the trunking, which are usually made of PVC.  Small, beam-shaped ducts are also offered in trunking systems. They are placed above the existing skirting board.

The trunking systems are too compact for installing devices such as switches and power sockets into them. There are however specially designed matching components for this. Virtually every trunking system and installation duct also has a range of accessories to help provide a good finish for inside and outside corners, flat corners, end pieces, etc.

Installation ducts

Installation ducts are larger compared with trunking systems. They have to be, as they are not only used for accommodating wiring, but also for mounting switches, power sockets and other devices, such as data, TV, motion detector, etc. Installation ducts are ideal for placing several power sockets over a workbench in the garage, or for providing various types of connections over a desk or in the kitchen. Installation ducts usually have a variety of colour and materials options, such as PVC, aluminium, etc.

Image: Legrand


Every trunking system and installation duct consists of two parts: a base and a cover. Depending upon the size of the duct, it can be screwed onto the wall or affixed using adequate installation glue. After installing the wiring and any devices, the cover is simply clicked onto the base without tools.


The most aesthetic electrical installation is of course one which is installed inside the wall. However, if that is impossible, trunking systems and installation ducts offer an attractive alternative. Care must be taken that accessories such as corners are used appropriately and in the prescribed manner. Moreover, it is usually possible to paint trunking and installation ducts in a colour that best matches your interior. This will make them less obvious and they will blend seamlessly into the rest of the space.

Image: Legrand


If there is no possibility for hiding the wiring in the wall, trunking and installation ducts offer an attractive way of making your electrical installation more flexible and providing additional functionality. Placing an additional power socket in trunking or an installation duct is simple.