Email:flower@czqb.com Changzhou Qiaobang Storage Equipment Co.,Ltd

Changzhou Qiaobang Storage Equipment Co.,Ltd

CableTray System

Cable trays are components of support systems for power and communications cables and wires. A cable tray system supports and protects both power and signal cables and facilitates upgrading, expanding, reconfiguring, or relocating networks. Most of these systems are open, allowing efficient heat dissipation and easy access for replacement and repairs. Although typically suspended from ceilings or affixed to walls, some cable tray systems are suitable for underfloor use. Tray systems are alternatives to wireways and electrical conduit, which completely enclose cables.

What type of cable tray should be used for the main runs of a cable tray wiring system?

The cable tray types to choose from are ladder,wire mesh cable tray, ventilated trough, or solid bottom. What are the reasons for selecting a specific type of cable tray?

The engineer or designer should select the type of cable tray that has the features which best serve the project’s requirements.

For a few types of installations, the National Electrical Code (NEC) specifies the cable tray type to be used:

Single conductor cables and Type MV cables must be installed in ladder or ventilated trough cable trays. Single conductor cables and Type MV cables are not allowed to be installed in solid bottom cable trays [1993 NEC Section 318-3(b)]

In Class II, Division 2 Hazardous (Classified) Locations (Dust), the types of cables that are allowed to be installed in cable trays must be in ladder or ventilated trough cable trays. 

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