Connection between tray cable trays and trough cable trays

Trough-type cable trays are connected using splice plates, bolts, and supports to form a continuous, secure pathway for cables.Overview of Trough-Type Cable Tray ConnectionsTrough-type cable trays, whether solid-bottom or ventilated, are modular systems designed for continuous cable runs. To connect sections, splice plates are typically used. These plates align the ends of two tray sections and are fastened with bolts or screws, ensuring structural integrity and proper load distribution across the joint . The connection must maintain the tray's alignment and support the weight of the cables without sagging.Steps for Connecting Trough TraysAlign the Tray Sections: Place the ends of the two trough sections in line, ensuring side rails and bottom surfaces are flush.Install Splice Plates: Position splice plates on the top, bottom, or sides of the tray joint, depending on manufacturer recommendations. These plates bridge the gap and provide mechanical strength .Secure with Bolts: Use bolts, nuts, and washers to fasten the splice plates tightly. Ensure all fasteners are torqued according to specifications to prevent loosening over time.Check Support Spacing: Supports such as wall brackets, trapeze hangers, or ceiling mounts should be positioned near the joint to maintain stability and prevent sagging .Optional Covers: If the tray has a cover, ensure it is also connected securely across the joint to protect cables from dust, moisture, or mechanical damage .Additional ConsiderationsGrounding and Bonding: Metal trough trays should be bonded across joints to maintain electrical continuity and safety.Thermal Expansion: Allow for slight expansion or contraction in long runs to prevent stress on the connections.Ventilated vs Solid Bottom: Ventilated trays may require additional alignment checks to ensure ventilation holes do not interfere with cable placement . By following these steps, trough-type cable trays can be connected safely and efficiently, providing a continuous, organized, and protected pathway for electrical and data cables .