What are the cables connected to the cable trays called

The cables installed in or supported by cable trays are commonly called "tray cables" or "cable tray cables."Overview

Cables routed through cable trays are generally referred to as tray cables, which are specifically designed for use in tray systems to support power distribution, control, instrumentation, and communication wiring . These cables are insulated and often come with additional features such as flame retardancy, shielding, or metal armor depending on the application.

Common Types of Tray Cables

1. Type TC (Tray Cable): These are factory-assembled cables with two or more insulated conductors, sometimes including grounding conductors, all under a non-metallic jacket. They are rated for 600 volts and are suitable for industrial power or control circuits. Type TC cables can be installed in cable trays, raceways, or outdoor locations with proper support .
2. Type ITC (Instrumentation Tray Cable): These cables are used for instrumentation and control applications. They may be shielded or unshielded and consist of multiple single conductors or twisted pairs, sometimes with metal armor for additional protection .

Installation Considerations

• Tray cables are typically secured at intervals to prevent sagging or damage, often using cable ties or clamps.
• They can be laid in ladder, ventilated, solid-bottom, or wire mesh trays, depending on the type of cable, environmental conditions, and heat dissipation requirements .
• Specialized fittings like elbows, tees, and drop-outs allow cables to exit the tray or change direction while maintaining support .

Summary

In essence, the cables connected to or laid within cable trays are engineered for safe, organized, and accessible routing and are collectively known as tray cables. Their selection depends on voltage rating, environmental exposure, and the type of signals or power they carry, ensuring compliance with electrical codes and operational safety .