Standard switches and single sockets usually fit 25mm boxes, while USB outlets, dimmers and cooker switches often need 35–47mm to accommodate modules and cable bending radii. Check the device datasheet and allow room for conductors to be dressed without strain.
Wiring Accessories, Boxes and Trunking
This range covers everyday wiring accessories for first and second fix, including Socket & Switch Boxes, surface Trunking & Conduit, Switches, Sockets & Plugs, cable management and replacement Meter Boxes for new builds, refurbishments and small repairs. Typical tasks include setting out back boxes before Plasterboard, clipping or trunking cable runs for a tidy finish, swapping damaged outlets, adding outdoor power, or refreshing a weathered meter cabinet without disturbing the supply. For domestic 13A accessories, products are built around the UK plug and socket system covered by BS1363, supporting safe, consistent connections across households and light‑commercial settings.
Cable management options such as mini trunking in 16mm×16mm and 16mm×25mm help conceal and protect surface wiring, with matching fittings for corners and entry points, while Cable Clips provide quick, discreet fixing for twin & earth and round flex on timber, masonry or plasterboard. Pairing trunking with the right clip size reduces strain on terminations and keeps runs accessible for future changes or testing. Where a surface route is preferred, self‑adhesive trunking speeds installation and maintains a neat line around skirtings and door frames.
External and site power needs are covered with weatherable outlet options and industrial pattern connectors, including 110V yellow and 230V blue types that follow the IEC/BS EN 60309 colour‑coding and keying conventions used across UK sites to prevent mis‑mating. These are offered within Sockets & Plugs alongside 13A extensions for general use. Metering enclosures and replacement doors in Meter Boxes support tidy, weather resistant installations, with products specified to BS8567:2012 for outdoor meter cupboards. When adding or altering circuits, current wiring regulations set requirements around protection and inspection, and notifiable work in dwellings must comply with Building Regulations Part P.
Electrical FAQ's
As a rule of thumb, 16mm×16mm handles one or two lighting cables comfortably, while 16mm×25mm gives more space for small bundles and accessories. Avoid overfilling, and use matching corners or tees for tidy direction changes.
Construction sites typically run 110V through centre‑tapped transformers for reduced shock risk. Use the yellow 110V industrial pattern connectors with compatible leads and transformers, and keep domestic 13A plugs for non‑site applications.
Choose a suitably IP‑rated enclosure, mount it on a solid surface, and ensure the circuit has 30mA residual current protection. Use weather‑resistant cable routes, seal wall entries neatly, and test the RCD before use.
Yes, if the cabinet is sound you can swap the door like‑for‑like, matching hinge type and size. The meter, seals and incoming cable remain under the supplier’s control, so avoid disturbing those components.