Cable Ladder Guide

Understanding Cable Ladders

Cable ladders are robust support systems designed to carry and organise large volumes of electrical or data cables in industrial, commercial and utility environments. They consist of two side rails connected by horizontal rungs, allowing cables to be laid neatly, supported securely and accessed easily for any maintenance or potential future expansion.

Cable Ladders Purpose

They are designed to be able to securely carry and route heavy cables across large locations. The open design reduces the possibility of any overheating, while the solid metal structure keeps everything in place.

What is the Difference Between Cable Ladders and Cable Trays?

Cable ladders and cable trays both support many types of cabling but have different designs and common applications. A cable ladder consists of two side rails connected by horizontal rungs, creating a highly ventilated structure. This makes it ideal for heavy-duty or potentially high-heat cabling, as it allows air to circulate freely and prevents overheating. The open design also makes installation and future maintenance easier.

In contrast, a cable tray is a single sheet of metal, which can be solid, perforated or mesh, that cradles cables more securely. Trays are commonly used for light to medium loads, particularly in commercial settings where protection from debris, electromagnetic interference or a tidy appearance is important. The flatter base helps stabilise cables and reduce any cable sag, but offers less ventilation than a ladder.

Cable Ladder Features

These cable management solutions have several features that support safe and efficient wiring. These key characteristics help ensure durability, accessibility and all-important long-term performance. Common features include open rungs for ventilation, strong load-bearing side rails, corrosion-resistant materials (such as zinc plating) and a wide range of fittings and sizes for flexible installation. Together, each of these elements allows cable ladders to handle heavy cabling while maintaining easy access and reliability.

What Materials Are Available in Electrical Ladders?

• Pre-galvanised steel is a material option usually found in interior environments, offering solid corrosion resistance at cost-effective pricing
• Hot-dip galvanised steel has a thicker and far more durable coating that is ideal for harsher or outdoor environmental conditions
• Aluminium boasts similar strength levels to steel and has natural resistance to corrosion at a much lighter weight. It is perfect for those jobs where strength is needed, with weight limits taken into consideration
• Zinc and magnesium-coated options offer far more enhanced protection against corrosion, particularly in demanding industrial settings
• Plastic cable ladders are non-conductive and have a high resistance to chemicals, making them useful in specialised applications

Benefits of Steel Cable Ladders

There are numerous benefits to steel cable ladders:

• They are a strong and sturdy application that can support heavy cables with relative ease if installed correctly with the right mounts
• These same fittings that provide extra strength to the ladder also require very little space
• This system ensures that cables are all secured along a single path, leaving little chance of cable sag, while also allowing for easy clipping to the ladder itself
• The open nature of the ladder design also reduces the chance of overheating. Cable ladders can be fitted both along a ceiling or down a wall

Cable Ladder Sizes

Cable ladder sizes can vary widely depending on the requirements of the installation, but they are generally available in a range of widths, depths and lengths. This is to accommodate the range of different cable volumes and load demands. Common widths typically range from narrow options for light cabling to wider ladders designed for large bundles or heavy-duty industrial systems. Depths and rung spacing also differ to support various load capacities and varying ventilation needs.

For a more specific guide, Lenson Select offers a comprehensive selection of cable ladder sizes across multiple materials and load ratings, allowing users to choose the most suitable option for their project.

Cable Ladders Use Cases

Any industry requiring strong and accessible cable support systems can benefit from cable ladders. This versatile solution for both heavy-duty and technical installations is used across a wide range of industries due to its strength, durability and ability to support heavy cable loads.

In industrial facilities such as manufacturing plants, refineries and chemical processing sites, cable ladders are essential for handling large volumes of power and control cables while allowing heat to dissipate effectively. Their open design also makes maintenance easier in environments where systems must be regularly inspected. Oil and gas facilities, both in onshore and offshore settings, benefit from corrosion-resistant ladder systems that will perform reliably in marine environments.

In the energy sector, including power stations, substations and renewable energy sites, cable ladders are relied on for their capacity to support thick power cables and withstand harsh environmental conditions. Commercial buildings, data centres and hospitals use cable ladders to organise extensive network, communication and electrical systems, ensuring easy access for upgrades and repairs.

Compliance and Regulations for Cable Ladders

According to UK regulations, cable ladder systems must comply with the appropriate British and European standards, as well as electrical safety regulations. Cable ladders should be manufactured in accordance with British Standard BS EN 61537, which sets requirements for performance, load testing and deflection limits. Installations must follow the IET Wiring Regulations (BS 7671), including rules on cable support and securing methods.

For cable ladders installed in specific protected escape routes, BS 7671 Regulation 422.2.1 requires systems to be non-flame-propagating under the criteria set by BS EN 61537, thereby reducing the smoke and fire risk. Metal cable ladders must also maintain proper earthing and bonding where required. Industry best-practice guidance stresses that installations should be carried out by competent persons, using suitable fixings and that cable ladders should never be used as, or as part of, a walkway.

Is a Cable Ladder Easy to Install?

Cable ladders are generally straightforward to install, especially when compared to running individual cables without support. As long as the area you are installing them in is relatively free of obstacles, it should be fairly simple. Their modular design, with side rails and rungs, allows for quick assembly and the ability to adjust lengths or configurations as needed. While installation is not overly complicated, careful planning and adherence to safety standards are essential to ensure stability, proper load distribution and continued reliability.

Key installation considerations and tips:

• Plan the route carefully
• Secure supports properly by using brackets, hangers or wall mounts suitable for the environment and load
• Check weight limits to avoid overloading the ladder to prevent cable sagging or failure
• Maintain proper spacing between rungs
• Allow for thermal expansion
• Ensure accessibility for maintenance and future cable additions

Considerations for Choosing a Cable Ladder

When choosing a cable ladder, ease of access is important, as an open design allows cables to be installed and maintained with minimal disruption. Installation flexibility, including adjustable fittings and accessories, can also simplify routing along complex paths.

Ventilation should also be considered, with open rungs helping heat dissipate and protecting cables from overheating. Load capacity is another priority, ensuring the ladder can support both current and future cabling requirements.

Environmental conditions matter as well, with corrosion-resistant materials being ideal for areas exposed to moisture, chemicals or inclement weather. Considering these points will help to ensure the long-term reliability and performance of your cable ladder.

Cable Ladders With Lenson Select

Explore the full range of Wibe cable ladders and Unitrunk cable ladders with Lenson Select. Both are designed to support heavy-duty and high-volume cabling in commercial, industrial and utility applications. If you need robust steel ladders for long cable runs or lighter-duty options for office and data installations, our team can help you choose the right solution. Contact our experts today for advice, guidance on sizing and materials, or to request a free quote.