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Cable Trunking

City Plumbing offers a staggering range of cable trunking to help you complete your projects. High-impact material and flame-retardant, you’ll find an assortment of sizes and shapes available with a choice of installation processes, all to help you organise your cables and wires.
What Is Cable Trunking?
Cable trunking is a protective enclosure that’s used to organise and hide cables and wires. A dedicated track or tunnel for electrical wiring, cable trunking helps keep wiring and cabling tucked away rather than hanging loosely across walls or floors.
Cable Trunking Materials and Durability
One of the most common and versatile of materials used for trunking is Durable PVC (Polyvinyl Chloride).
  • Resilience: PVC offers resistance to chemical erosion, impact, and moisture. This makes it ideal for long-term protection of sensitive wiring.
  • Safety: High-quality PVC trunking is usually flame-retardant, so it won't catch on fire easily or contribute to the spread of a flame.
  • Adaptability: Durable PVC is simple to cut to specific lengths. As it comes in various shapes (rectangular, D-shaped, or corner-profile) and sizes, it’s easier to accommodate everything from a single lamp cord to a massive bundle of Ethernet cables.
Where Is Cable Trunking Used?
Trunking is the go-to solution for any environment where safety and aesthetics are priorities:
  • Schools & Offices: Used to manage a high volume of data and power cables, preventing trip hazards in high-traffic areas.
  • In the Home: Perfect for hiding messy TV wires, DIY home theatre setups, or running power to a new wall-mounted fixture without cutting into the drywall.
  • Professional Settings: In hospitals or data centres, trunking ensures that wires remain organised for easy maintenance and are protected from accidental damage.
Types Of Cable Trunking Available
To choose the right cable management solution, you need to match the trunking type to the cable volume and the specific environment. Here is a breakdown of the most common varieties:
Mini Trunking
This is the most common type used for basic domestic and light commercial tasks. As the name suggests, it has a small profile (typically 16-25mm wide). It's designed to carry a small number of cables, such as a single power lead or a couple of lighting wires, making it very discreet on skirting boards or walls.
Maxi Trunking
Maxi trunking is the "heavy-duty" sibling of mini trunking. It is much larger in cross-section and is built to house large bundles of heavy cables. You'll typically see this in industrial settings or commercial plant rooms where high-capacity power distribution is required. Its structural integrity is higher, enabling it to support the weight of multiple thick cables.
Dado Trunking
Often referred to as "perimeter trunking," this is frequently found at waist height (the "dado" level) in offices and schools. It's unique because it's multi-compartment, allowing you to run data cables (like Ethernet) in one channel and power cables in another to prevent interference. It also allows sockets and switches to be mounted directly onto the trunking.
Self-Adhesive Trunking
This is the ultimate "DIY-friendly" option as it features a strong adhesive strip on the back, allowing you to peel and stick the trunking directly to a clean surface without drilling or screws. While incredibly convenient for home setups or light office cable management, it’s generally intended for lighter loads than screw-fixed options.
How to Choose the Right Cable Trunking Size
Choosing the right size is the most critical step in your cable management project. If it’s too small, you risk damaging the wires; if it’s too large, it can look bulky and intrusive.

Finding the Right Fit

The dimensions you choose depend entirely on the quantity and the overall diameter of the cables you intend to hide. Because cables generate a small amount of heat and need room to bend, you should never over pack them in.
Here are some common sizing examples to give you a sense of scale:
  • 16 times 16mm (Mini): Ideal for a single standard power cable or a couple of thin alarm wires. It’s very discreet and blends well with home decor.
  • 25 times 16 mm: A popular mid-size for "home office" setups, usually fitting two or three HDMI or Ethernet cables comfortably.
  • 50 times 50 mm: Often used in commercial spaces to carry a bundle of roughly 10–15 network cables.
  • 100 times 100 mm (Maxi): Heavy-duty industrial sizing used for main power feeds or massive trunks of data cabling in server rooms.

Top Tip: The 40% Rule

A good trade tip is that when choosing cable trunking, always aim for a "40% Fill Factor." This means you should leave about 60% of the internal space empty. Leaving this extra breathing room is vital for:
  • Heat Dissipation: Preventing cables from overheating.
  • Easy Maintenance: Allowing you to pull new cables through or remove old ones without tearing the whole system off the wall.
  • Flexibility: Giving you space for "future-proofing" if you need to add another device later.

What Cable Trunking Is Available at City Plumbing?

Our vast range of cable trunking includes everything you need to get the job done. From adaptors, bends, dado trunking, end cap dado, external angles and external bends to flat angles, flat bend, internal angles, internal bends, outlet boxes, polyvinyl chloride capping, stop ends to straight connectors and much more, we’ve got a trunking type to suit all tasks here at City Plumbing.

Buy Cable Trunking at City Plumbing

City Plumbing is your number one for local plumbers' merchants for both homeowners and installers working in the trade.​
With a first-class Trustpilot rating, a wealth of knowledge from four-plus decades of experience, and outstanding plumbing and heating products and advice, we’re here to help you get the job done.​
Providing all customers with a fantastic choice of more than 350 branches nationwide, our prices are competitive to help ensure you finish all your projects on budget.
​With several Delivery Options and a Click & Collect service, if you’re looking for a City Plumbing near me, type your postcode into our branch locator to find your nearest City Plumbing Supplies.

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