Standard parts for galvanized cable trays

Standard galvanized cable tray systems include straight sections, bends, tees, elbows, drop-outs, supports, covers, and accessories, all designed to resist corrosion and comply with industry standards.

Common Components

Straight Sections: These are the main runs of the cable tray, available in ladder, trough, solid bottom, or channel types. They form the backbone of the cable management system and are typically made from structural steel, pre-galvanized or hot-dip galvanized for corrosion resistance . Fittings: Essential for changing direction or branching the tray system, fittings include:

• Bends and elbows for horizontal or vertical turns
• Tees for branching cable runs
• Drop-outs for cable exit points
• Reducers to transition between different tray widths Supports and Brackets: These secure the trays to walls, ceilings, or other structures. Standard supports include wall brackets, trapeze hangers, and cantilever arms, designed to maintain stability and load capacity . Covers and Splice Plates: Covers protect cables from dust, debris, and environmental exposure. Splice plates, along with bolts, nuts, and washers, connect tray sections securely. For hot-dip galvanized trays, covers and splice plates are also hot-dip galvanized after fabrication to ensure uniform corrosion protection . Accessories: Additional parts include clamps, cable ties, grounding kits, and end caps. These ensure proper cable organization, safety, and compliance with electrical codes .

Galvanization Methods

• Hot-Dip Galvanizing: Steel parts are immersed in molten zinc, creating a thick, durable coating ideal for harsh environments .
• Electro-Galvanizing: A thinner zinc layer is applied using an electric current, suitable for less demanding conditions .

Standards and Compliance

Galvanized cable tray systems are manufactured according to standards such as ASTM A123, ASTM A653, ASTM A1008, ASTM B633, and NEMA VE 1, ensuring mechanical strength, corrosion resistance, and safety . Compliance with ANSI/NFPA 70 (National Electrical Code) is also required for electrical installations .

Summary

A complete galvanized cable tray system consists of straight sections, fittings, supports, covers, splice plates, and accessories, all designed to provide durable, rust-resistant cable management. Selection of parts depends on project requirements, environmental conditions, and load capacity, with hot-dip galvanizing recommended for outdoor or corrosive environments .