Installation of Latvian Trough-type Cable Trays

Latvian Trough-type cable trays are installed by carefully planning the route, securing ventilated trough sections with proper supports, and organizing cables to ensure ventilation and load safety.

Overview of Trough-Type Cable Trays

Trough-type cable trays feature a ventilated bottom, providing a balance between the open structure of ladder trays and the protection of solid-bottom trays. They are ideal for medium to heavy cable loads, offering good ventilation while supporting cables more securely than ladder trays, making them suitable for industrial and commercial installations .

Step-by-Step Installation

1. Planning the Route

• Review approved shop drawings to determine tray layout, including straight runs, bends, tees, and risers .
• Ensure the route avoids interference with other utilities such as pipes, ducts, or HVAC systems .
• Calculate tray width and depth based on the number and type of cables to prevent overcrowding and overheating . 2. Material Preparation
• Inspect all tray sections, fittings, and accessories for damage or discrepancies before installation .
• Store trays horizontally on a flat surface with timber supports at intervals of about 1 meter to prevent deformation .
• Gather necessary tools, clamps, brackets, and fasteners according to manufacturer specifications . 3. Installing Supports
• Use wall brackets, ceiling hangers, or trapeze supports to anchor the tray system securely .
• Support spacing typically ranges from 1.5 to 3 meters, depending on tray load and type .
• Ensure supports are level and aligned to prevent sagging and maintain structural integrity . 4. Assembling Tray Sections
• Connect straight sections using splice plates and secure with bolts or clamps .
• Install bends, tees, and reducers as required to navigate changes in direction or width .
• Maintain proper alignment and level throughout the installation to facilitate smooth cable laying . 5. Laying Cables
• Organize cables by type and voltage, using cable ties or straps to maintain separation .
• Leave sufficient slack for thermal expansion, movement, or future modifications .
• Ensure cables do not exceed the tray's load rating and maintain proper bend radius at exits . 6. Covers and Protection
• If required, install covers to protect cables from dust, moisture, or mechanical damage .
• Use hold-down clamps to secure covers without compressing cables, preserving ventilation and airflow . 7. Final Checks
• Verify that all sections are securely fastened and level.
• Confirm that cable spacing, support intervals, and load ratings comply with engineering standards and manufacturer guidelines .
• Inspect for any sharp edges or protrusions that could damage cables during operation .

Best Practices

• Use cable tray rollers for long runs to prevent kinks and facilitate smooth cable placement .
• Plan for future expansion by selecting trays with slightly higher load capacity than current requirements .
• Regularly inspect installed trays for sagging, corrosion, or loose fasteners, especially in industrial environments . By following these steps, a Latvian Trough-type cable tray system can be installed safely, ensuring adequate ventilation, structural stability, and organized cable management for long-term reliability .