Mali cable trays typically follow standard industrial dimensions, with widths from 50mm to 900mm, depths from 25mm to 150mm, and lengths around 3 meters per section.

Standard Widths

Cable tray width is the primary factor determining cable capacity. Standard widths generally range from 50mm to 900mm:

• Narrow trays (50–150mm): Used for instrumentation and control wiring in small installations .
• Medium trays (300–600mm): Suitable for general power distribution in commercial buildings and moderate industrial setups .
• Wide trays (600–900mm): Designed for heavy industrial applications, data centers, or large cable bundles .

Standard Depths

Depth, also called side rail height, affects vertical stacking and heat dissipation. Typical depths range from 25mm to 150mm, depending on cable volume and ventilation requirements . Deeper trays allow more cables but may reduce airflow efficiency, so width often provides better overall capacity than simply increasing depth .

Standard Lengths

Cable trays are usually manufactured in 3-meter (10-foot) sections, which balances ease of transport and installation while allowing modular assembly for long runs .

Material Thickness

For galvanized iron trays like those offered by Mali Engineering Works, thickness typically meets ASTM A653 standards, ensuring corrosion resistance and structural integrity. Heavy-duty trays may require 2.5mm or greater thickness with reinforced side rails for maximum load support .

Cable Fill and Safety

To prevent overheating, trays should be filled to no more than 40–50% of their cross-sectional area for power cables, leaving space for ventilation and future expansion . Control and instrumentation cables may allow slightly higher fill ratios.

Summary

While Mali Engineering Works does not list exact dimensions online, their galvanized iron cable trays are expected to conform to industry-standard sizes:

• Width: 50–900mm
• Depth: 25–150mm
• Length: 3 meters per section
• Thickness: 2.5mm+ for heavy-duty applications These dimensions ensure compatibility with standard fittings, code compliance, and safe cable management in industrial, commercial, and residential installations .