How to connect cable tray bolts

To connect cable tray bolts, use splice plates to join tray sections, insert bolts from the inside, and tighten nuts on the outside while ensuring grounding continuity.Step-by-Step Guide

1. Align the Tray Sections Place the two cable tray sections end-to-end, ensuring they are level and properly aligned along the intended route. This prevents sagging and ensures smooth cable installation . 2. Position the Splice Plate Use a flat metal splice plate with pre-drilled holes. Place it on the side of the tray where the two sections meet. Splice plates provide a strong, secure connection and are compatible with most tray types . 3. Insert the Bolts Insert mushroom-head or standard bolts from the inside of the tray pointing outward. This orientation protects cables from snagging on the bolt threads and ensures a neat installation . 4. Tighten the Nuts Place nuts on the outside of the tray and tighten them using a spanner or torque wrench. Ensure the bolts are snug but avoid over-tightening, which could deform the tray or strip threads . 5. Ensure Electrical Continuity If the splice plate is not rated for grounding, install a copper bonding jumper across the joint to maintain electrical continuity. This step is critical for safety and compliance with grounding practices . 6. Inspect the Connection Check that the tray sections are firmly joined, level, and free of gaps. Verify that all bolts are tightened and that the grounding jumper is properly installed. This ensures system stability and long-term durability .

Tools and Materials Needed

• Splice plates (couplers)
• Mushroom-head bolts and nuts
• Spanner or torque wrench
• Copper bonding jumper (if required)
• Level and measuring tape Following these steps ensures a secure, stable, and safe cable tray system that supports the weight of cables, prevents sagging, and maintains proper grounding for electrical safety .