Are there any pipes inside the cable tray

No, cable trays are designed to support electrical cables and do not contain pipes.

Cable trays are structural systems used to organize, support, and route electrical, communication, and optical fiber cables in buildings and industrial facilities, but they are not intended for mechanical piping such as water, air, gas, or drainage pipes . According to the National Electrical Code (NEC), installing tubes or pipes carrying fluids or gases in cable trays with electrical conductors is not permitted . Cable trays provide a safe, accessible, and ventilated pathway for cables, allowing for heat dissipation, inspection, and maintenance .

Purpose and Design

Cable trays come in various configurations, including ladder, trough, and solid-bottom types, each designed to balance cable protection, ventilation, and accessibility . They are modular, allowing engineers to route cables around obstacles and change elevations without enclosing them like traditional conduit piping. The open design also prevents overheating and simplifies the addition or removal of cables over time .

Relationship with Pipes

While cable trays and pipes often coexist in industrial or commercial installations, they must be kept separate to avoid interference, heat transfer, or potential hazards. Proper safety distances are required between cable trays and pipes to prevent electrical failures, fire risks, or damage from leaks or vibrations . Pipes are used exclusively for transporting liquids, gases, or other materials, whereas cable trays are strictly for electrical and communication wiring.

Summary

In short, cable trays do not contain pipes. They are dedicated to supporting and organizing electrical and communication cables, and any piping must be installed separately with adequate spacing to ensure safety and compliance with electrical codes .