Wire mesh cable trays are well suited to data-centre, telecom and ELV pathways because they combine open ventilation, visibility and route flexibility. Their real value is lifecycle accessibility: cables can be inspected, added, removed and branched without turning the pathway into a closed box.
Ruwais Steel supplies wire mesh cable trays in hot-dip galvanized steel, electro-zinc, stainless steel and black-painted options. Data-centre pathways still need engineering around fill, bend radius, supports, separation, firestopping and bonding.
Why Data-Centre Pathways Need Different Thinking
- High density of copper and fibre links.
- Frequent moves, adds and changes.
- Strict fibre bend-radius requirements.
- Power/data separation.
- Airflow priorities.
- Overhead/underfloor coordination.
- Labelling and maintainability.
Wire Mesh vs Perforated Cable Tray
| Factor | Wire Mesh | Perforated Tray |
|---|---|---|
| Visibility | Excellent | Good |
| Ventilation | Very high | Good |
| Field changes | Highly flexible with approved methods | Usually prefabricated fittings |
| Bottom support | Open wire grid | More continuous |
| Typical use | Data, telecom, ELV | Power, control, MEP |
Heavy power routes may instead require cable trays or cable ladders.
1. Pathway Fill: Preserve Operational Capacity
A tray filled to its physical limit is difficult to maintain. Additional cables become harder to install and identify, and dense bundles create stress at transitions.
Allowable fill should follow applicable cabling standards, cable guidance and the project specification. Planned spare capacity should remain usable at bends and drops, not only on straight runs.
2. Fibre Bend Radius Controls Route Geometry
Fibre can suffer increased attenuation or physical damage when bent too tightly. Minimum radius depends on cable construction and whether the cable is under pulling tension or in its final installed condition.
Use radius-control accessories or properly formed transitions at bends, waterfalls and rack drops.
3. Protect Cables at Tray Exits
- Use radius-controlled drop-outs where required.
- Avoid sharp cut ends.
- Deburr or use approved edge protection.
- Support heavy bundles independently where needed.
- Do not overtighten cable ties around fibre/data bundles.
4. Support Spacing Must Match Load
Wire mesh trays still carry cable dead load. Width, wire diameter, mesh geometry, joints and span influence deflection.
Use system load data rather than arbitrary site spacing. Additional supports can be needed near bends, intersections and drops.
5. Airflow and Cooling Coordination
Open mesh reduces the solid obstruction created by the pathway, but cables still occupy volume.
Poorly located overhead bundles can interfere with containment, diffusers and maintenance. Coordinate tray routes with cooling, rack layouts, busway, sprinklers and lighting.
6. Separate Data From Power Where Required
Power and communications may need separation for safety, EMC and maintainability. The exact distance depends on cable construction, power level, shielding and applicable standards.
Do not use spare space in a data basket to mix services the design requires to remain separate.
7. Earthing and Bonding
The telecommunications/electrical grounding design should define how metallic pathways are bonded.
Joints, coatings and field cuts can affect continuity. Do not assume the tray itself is a protective conductor unless the system and design explicitly allow it.
8. Select Material and Finish for the Environment
| Finish | Possible Application | Review |
|---|---|---|
| Electro-zinc | Dry indoor spaces | Project environment |
| Galvanized | Indoor or more demanding areas depending on process | Define galvanizing route |
| Stainless | Corrosive / special environments | Specify grade |
| Painted | Identification / appearance | Durability and cut repair |
9. Field Cutting Must Be Controlled
Wire mesh can be modified on site, but poor cutting leaves sharp edges and can weaken the route.
Use approved tools, couplers and edge treatment. Makeshift wire ties should not replace structural joining components.
10. Coordinate Firestopping
Where cables penetrate fire-rated walls or floors, use an approved firestop system compatible with the construction and cable configuration.
Future cable additions must preserve the required firestop performance.
11. Labelling and Administration
Open pathways improve visibility, but dense installations still need disciplined pathway and cable identification.
Good labelling reduces troubleshooting time and discourages abandoned cable accumulation.
12. Overhead vs Underfloor Routes
Overhead trays are visible and accessible but compete with sprinklers, busway and lighting.
Underfloor pathways can be close to equipment but may compete with cooling airflow and floor supports. The data-centre architecture should determine the route.
Wire Mesh Tray Procurement Checklist
- Width and depth.
- Wire diameter and mesh.
- Material and finish.
- SWL at proposed span.
- Couplers.
- Bend/intersection method.
- Drop-out accessories.
- Supports.
- Bonding accessories where specified.
- Certificates and submittal documents.
Common Wire Mesh Tray Installation Mistakes
- Overfilling from day one: this reduces usable spare capacity and makes future cable changes difficult.
- Sharp field-cut fibre bends: fibre routes must maintain the required bend radius.
- Cables bearing on cut wire ends: exposed edges should be properly treated or protected.
- Excessive cable-tie tension: overtightening can damage fibre and data cables.
- Ignoring power/data separation: different services should remain separated where required by the design.
- Arbitrary support spacing: support locations should reflect system load data and route configuration.
- Blocking cooling or maintenance zones: pathways must be coordinated with the complete data-centre layout.
- Unapproved fire-barrier penetrations: cable penetrations must maintain the required firestop performance.
Wire Mesh Tray for UAE Data and ELV Projects
Ruwais Steel supplies wire mesh cable trays for commercial, industrial, data and ELV applications.
Explore the full cable management and industrial steel range or send your pathway sizes, finish and BOQ for project review.
Frequently Asked Questions About Wire Mesh Cable Trays
Are wire mesh trays suitable for fibre?
Yes, when the pathway preserves the cable manufacturer's bend radius and protects cables at exits and transitions.
Why use wire mesh in data centres?
It provides visibility, ventilation, accessible routing and relatively easy route modification for environments with frequent changes.
Can wire mesh carry power cables?
Some systems can within their rated load and electrical requirements, but heavy power routes commonly use trays or ladders designed for those loads.
Technical References
- IEC 61537:2023 — Cable management: cable tray systems and cable ladder systems.
Engineering note: fill, bend radius, separation, bonding and firestopping must follow the approved facility design and applicable standards.
