The cable tray contains cable ties

Cable trays do not inherently come with cable ties, but cable ties are commonly used to secure cables within the tray, following safety and code requirements.

Use of Cable Ties in Cable Trays

Cable trays are open or enclosed support structures designed to organize and route electrical cables efficiently, providing mechanical support and ventilation for heat dissipation . While the tray itself provides the pathway and structural support, cables are often secured to the tray using cable ties to prevent movement, maintain spacing, and reduce mechanical strain .

Types of Cable Ties and Requirements

• Standard cable ties can be used in non-plenum areas, but in plenum spaces or areas with fire-safety concerns, fire-rated or low-smoke, halogen-free ties are required to minimize toxic smoke during a fire .
• UV-resistant ties are recommended for outdoor installations to prevent degradation from sunlight .
• Ties should be applied carefully to avoid overtightening, which can damage cable jackets and compromise long-term reliability .

Installation Guidelines

• Cables should be supported at appropriate intervals to prevent undue mechanical strain, especially in long horizontal or vertical runs .
• At bends or transition points, cables should be secured with ties or other approved supports to maintain the minimum bending radius and provide strain relief .
• The spacing of cable ties depends on cable type, size, and tray design, with ladder-type trays often allowing ties to be attached to rungs for easy organization .

Summary

While cable trays themselves do not include cable ties, proper installation typically involves using cable ties or other approved supports to secure cables, comply with electrical codes, and ensure safety. The choice of tie type and placement depends on environmental conditions, fire-safety requirements, and the specific cable tray design .