Proper installation of cable trays with fireproof partitions ensures fire containment, safe operation, and compliance with industrial safety standards.

Planning and Layout

Cable tray routes should follow the shortest and straightest path while coordinating with the building structure to avoid unnecessary crossings or detours. Power and signal cables must be segregated using dedicated trays to minimize interference. When trays pass through walls or floors, fire-rated sealing materials should be used to maintain fire containment .

Material Selection

Fireproof partitions and trays should be made of non-combustible materials such as gypsum board, mineral wool board, aluminum-plastic board, or fireproof coatings. The thickness of partitions should generally be ≥10 mm to ensure adequate fire resistance. Tray materials vary by environment: painted or galvanized steel for indoor use, hot-dip galvanized or stainless steel for outdoor, and aluminum alloy or fiberglass-reinforced plastic for corrosive or high-humidity areas .

Installation Guidelines

1. Positioning: Install partitions above the cable tray and at least 100 mm from the tray edge to effectively block fire spread .
2. Surface Preparation: Ensure the mounting surface is clean, smooth, and free of oil or debris to guarantee proper sealing and stability .
3. Sizing: Select partition size and thickness based on tray width and number of cables to be protected .
4. Fastening: Secure partitions with appropriate fasteners to ensure they remain firm and reliable .
5. Observation: Include inspection holes in partitions to monitor internal tray conditions .

Fireproofing and Safety

Fire-blocking sections prevent fire propagation, protect equipment, and reduce property loss. Common fireproofing materials include fireproof boards, coatings, bags, and fireproof mud, each with trade-offs in durability, heat dissipation, and maintenance requirements . Regular inspection is essential to check coating integrity, sealing effectiveness, and mechanical stability .

Heat Dissipation

Use perforated or wire mesh trays and maintain adequate spacing between cables to prevent heat accumulation, which can compromise fireproof performance .

Maintenance

Periodic checks should include:

• Tray alignment and connection integrity
• Grounding continuity
• Inspection for corrosion, moisture, or UV damage (for outdoor trays)
• Fireproof partition integrity and sealing effectiveness Following these guidelines ensures that cable trays with fireproof partitions provide effective fire containment, operational safety, and long-term reliability in industrial and commercial installations.