Horizontal cable tray turning and translation
Horizontal cable tray turns and translations are achieved using bend transition trays or flexible adjustable splice plates, allowing smooth directional changes while maintaining proper cable support and bend radius.
Horizontal Turns
Horizontal turns in cable tray systems are typically accomplished using 90° bend transition trays or similar fittings. These trays provide a smooth bend radius, often around 24 inches, to facilitate easy installation of cables such as coaxial or data cables without exceeding their minimum bend radius requirements. They connect to standard cable trays using splice clamps, and are available in various widths and depths to match the main tray system (e.g., 12", 18", 24" widths with 4" or 6" depths) .
Horizontal Translation and Adjustable Splices
When standard horizontal fittings do not align with the desired routing, flexible horizontal adjustable splice plates can be used. These splices allow for field adjustments to achieve the required horizontal angle. Installation involves:
- Preparing the cable tray and splice plates.
- Determining the desired angle for the turn.
- Field cutting the tray or ladder to fit the splice.
- Removing any affected rungs if necessary.
- Securing the splice with included hardware, ensuring supports are within 24 inches on both sides . These splices are compatible with aluminum cable trays up to 36 inches wide and do not require bonding jumpers, simplifying installation.
Best Practices
- Maintain proper bend radius: Ensure that the bend radius of the tray does not exceed the cable manufacturer's minimum specifications to prevent damage.
- Support spacing: Provide adequate support near bends and splices, typically within 24 inches, to maintain structural integrity and prevent sagging.
- Material compatibility: Use fittings and splices that match the tray material (steel, aluminum, or fiberglass) to ensure mechanical and corrosion resistance .
- Modular system use: Ladder or ventilated trays can be mounted on floors, walls, ceilings, or racks, allowing flexible routing in data centers or industrial environments .
Summary
Horizontal cable tray routing can be effectively managed using bend transition trays for standard 90° turns and flexible adjustable splice plates for custom angles or translations. Proper installation ensures smooth cable paths, maintains minimum bend radii, and provides mechanical support for long cable runs, making the system safe and reliable for electrical or data cabling applications.
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