How big are two 185 cable trays

Two 185 mm cable trays together would have a combined width of 370 mm, with standard depths typically ranging from 25 mm to 150 mm and lengths around 3 meters per section.

Dimensions Overview

A single 185 mm cable tray generally refers to its nominal width, which is the internal space available for cables. Standard cable tray depths (sidewall heights) vary depending on type and load requirements, commonly between 25 mm and 150 mm, while lengths are usually 3 meters (10 feet) per section for ease of transport and installation. When considering two trays side by side, the combined width is simply 185 mm + 185 mm = 370 mm, while the depth and length remain the same as a single tray unless stacked vertically or connected end-to-end.

Practical Considerations

Cable Fill: Cable trays should not be filled beyond 40–60% of their cross-sectional area to allow for heat dissipation and future cable additions. Tray Type: Ladder, perforated, channel, or wire mesh trays may have slightly different usable depths and widths due to sidewall height, rung spacing, or mesh structure. Installation: Two trays can be installed side by side for increased capacity or separated for different cable types, ensuring compliance with separation requirements for power and data cables.

Example

If each 185 mm tray has a depth of 50 mm and a length of 3 meters, two trays together would provide: Combined width: 370 mmDepth: 50 mmLength: 3 meters This configuration allows for safe cable management while maintaining proper ventilation and compliance with NEC and IEC standards. In summary, two 185 mm cable trays side by side provide a total width of 370 mm, with depth and length determined by the specific tray type and manufacturer, typically ranging from 25–150 mm in depth and 3 meters in length per section.