How to add dividers to cable trays

Cable tray dividers are installed to separate and organize cables, preventing interference and improving safety and maintenance.Purpose of Cable Tray Dividers

Cable tray dividers create physical partitions within a tray, allowing different types of cables—such as power, data, or communication lines—to be routed separately. This reduces the risk of electromagnetic interference (EMI), prevents tangling, and protects cables from physical damage, extending their lifespan and simplifying maintenance ( ).

Types of Dividers

• Metal dividers: Durable, suitable for heavy-duty or high-temperature environments.
• Plastic dividers: Lightweight, corrosion-resistant, and easy to install.
• Snap Track dividers: Designed for Snap Track trays, often installed with push pins for secure attachment ( ).

Installation Steps

1. Measure and Plan: Determine the number of dividers needed and their placement based on cable types and tray width ( ).
2. Prepare the Tray: Ensure the tray is clean and free of sharp edges. Remove paint or coatings if grounding is required ( ).
3. Position the Divider: Place the divider in the tray at the desired location. For Snap Track dividers, align the push pins with the tray slots ( ).
4. Secure the Divider: Insert bolts or push pins through the divider into the tray. Use washers and nuts as needed, ensuring bolt heads are on the inside to protect cables ( ).
5. Adjust for Custom Shapes: If the tray has bends or radius changes, dividers can be field-fabricated using tin snips or cutting tools to fit the contour ( ).
6. Grounding (if required): For metal dividers in conductive trays, install a continuous ground conductor along the tray to maintain electrical safety ( ).

Best Practices

• Separate power and data cables whenever possible to minimize EMI ( ).
• Use appropriate support spacing for trays and dividers, typically every 1.5–2 meters, depending on tray size and load ( ).
• Deburr all cut edges to prevent cable insulation damage ( ).
• Follow manufacturer guidelines for divider attachment and tray load ratings to ensure safety and compliance with NEC or local codes ( ). By following these steps, cable tray dividers can be effectively installed to maintain organized, safe, and efficient cable management systems.