Cable tray accessories for communication equipment rooms

Cable tray connectors and accessories are essential components for securely joining, supporting, and routing cable trays in communication equipment rooms, ensuring compliance with standards and efficient cable management.

Types of Cable Tray Connectors and Fittings

Cable tray connectors are used to join sections of cable trays, change direction, or adjust height and width. Common types include:

• Elbows: For 90° or 45° turns in horizontal or vertical planes.
• Tees and Crosses: To branch cable trays into multiple directions.
• Reducers: To transition between different tray widths.
• Risers and Vertical Bends: For vertical routing between floors or levels.
• Connecting Plates and Bolts/Nuts: For securely joining tray sections.
• Expansion Joints: To accommodate thermal expansion and contraction.
• Supports and Suspension Rods: To mount trays to ceilings or walls.
• Covers and Dividers: To protect cables and separate different cable types ( ).

Materials and Construction

Connectors and fittings are typically made from durable materials to ensure long-term performance and corrosion resistance:

• Galvanized Steel: Common for indoor installations, provides strength and corrosion protection.
• Stainless Steel: Used in high-humidity or corrosive environments.
• Aluminum Alloy: Lightweight and corrosion-resistant, suitable for overhead installations.
• Fiberglass-Reinforced Plastic (FRP): Non-conductive and corrosion-resistant, ideal for specialized environments ( ).

Compatibility with Cable Tray Types

Cable tray connectors must match the tray type:

• Ladder Cable Trays: Connectors attach to side rails and rungs; suitable for heavy-duty cabling.
• Basket Cable Trays: Wire mesh trays use connectors that clamp or bolt to mesh sides.
• Solid-Bottom or Channel Trays: Require connectors that align with solid surfaces and side rails ( ).

Installation Considerations

• Ensure connectors maintain proper grounding and bonding according to NFPA 70 and local codes.
• Use connectors that prevent cable pinch points and allow secure fastening with cable ties or lacing bars.
• Verify load ratings and span limitations to support the weight of cables without sagging.
• Follow manufacturer specifications for bolt torque, alignment, and clearances to maintain structural integrity ( ).

Sourcing and Selection

Cable tray connectors are widely available from suppliers such as McMaster-Carr, JLH Electric, and other industrial distributors, offering same-day or custom fabrication options to meet project-specific requirements ( ). By selecting the appropriate connectors and fittings, communication equipment rooms can achieve organized, safe, and code-compliant cable management, facilitating maintenance and future expansion.