Trunking is surface-mounted cable management with a removable lid, typically used where cables need to be accessible for future changes. Conduit is a tube (rigid or flexible) that protects cables, often used within walls during construction. Trunking is easier to install and modify; conduit provides a cleaner concealed finish but requires more planning during the build stage.

Surface-mounted trunking can be fitted by a competent DIYer using screws, adhesive, or clips. However, any electrical connections, circuit modifications, or work that involves mains wiring must be carried out by a qualified electrician. Ensure trunking is properly secured, level, and that cables are not pinched or damaged during installation. Always follow BS 7671 for cable separation requirements.

Trunking size depends on the number and size of cables. Mini trunking (16x16mm or 25x16mm) is suitable for 1-3 small cables. Standard trunking (25x25mm to 40x25mm) handles 3-6 cables. Maxi trunking (50x50mm and above) is for larger installations. Never fill trunking beyond 45% capacity to allow for heat dissipation and future additions. Check BS 7671 cable sizing tables for exact requirements.

Brush plates (also called brush cable entry plates) are single-gang or double-gang wall plates with a strip of brush fibres that allow cables to pass through while preventing draughts and maintaining a tidy appearance. They are ideal for behind TV wall mounts, desks, and AV equipment. Brush plates fit standard back boxes and are available in finishes to match your other switches and sockets.

No, BS 7671 requires segregation between mains power cables and data/communication cables to prevent electromagnetic interference. If using a single trunking run, use compartmentalised (divided) trunking with a physical barrier between power and data compartments. Alternatively, use separate trunking runs for mains and data cables.

For outdoor cable runs, use PVC conduit rated for outdoor use (UV-stabilised, often grey or black) or galvanised steel conduit for heavy-duty applications. Round rigid PVC conduit with solvent-welded joints provides good weather protection. Flexible corrugated conduit can be used underground when protected by sand or cable tiles. All outdoor conduit must be properly sealed at entry points to prevent water ingress.

Cable clips are sized to match specific cable diameters. Round cable clips suit Twin and Earth cables (sizes from 1mm to 10mm). Flat cable clips are designed for flat Twin and Earth cable profiles. T&E (Twin and Earth) clips are specifically profiled for this common cable type. Always use the correct clip size so the cable is held securely without being compressed or damaged.