Ordinary elbows in cable trays are pre-fabricated components that allow cables to change direction safely and efficiently, typically available in 45° and 90° angles and made from steel, aluminum, or stainless steel.

Purpose and Function

Ordinary elbows are used to route cables around corners or obstacles in a cable tray system without compromising the integrity of the cables. They help maintain proper bend radius, prevent mechanical damage, and ensure neat and organized cable management in industrial, commercial, and residential installations .

Types and Angles

• Standard angles: Most common are 90° and 45° elbows, though custom angles can be fabricated if needed .
• Horizontal and vertical elbows: Designed to change direction in the horizontal plane or vertical plane, depending on installation requirements.
• Fabricated or mitered bends: These are made by cutting and bending straight tray sections, often using two 45° cuts to form a 90° elbow, and are used when pre-fabricated elbows are not available or for custom installations .

Materials and Surface Treatment

• Steel: Strong and durable, often galvanized to prevent corrosion.
• Aluminum: Lightweight and corrosion-resistant, suitable for high-rise or industrial applications.
• Stainless steel: Offers superior corrosion resistance, ideal for harsh environments .
• Surface finishes: Galvanized or painted surfaces provide additional protection and aesthetic value.

Installation Considerations

• Ensure the elbow diameter matches the cable tray width to securely hold cables.
• Maintain the minimum bend radius for cables to prevent damage and signal interference.
• Fasten elbows using nuts, bolts, and washers, and apply protective coatings if necessary to prevent rust .
• In industrial settings, elbows help manage large volumes of cables efficiently, while in commercial spaces, they maintain a neat and concealed appearance.

Summary

Ordinary elbows are essential components in cable tray systems, providing safe, organized, and efficient cable routing. Choosing the right angle, material, and installation method ensures long-term reliability and compliance with electrical safety standards .