Flat iron of cable tray

A flat iron in a cable tray system is a metal support bar, often slotted, used to mount and stabilize cable trays, ladders, and other electrical installations.

Definition and Purpose

A flat iron is a flat, elongated piece of metal, typically steel, that serves as a structural support for cable trays and cable ladders in electrical installations. It provides a rigid base to secure trays, maintain alignment, and ensure proper spacing of cables, preventing sagging or misalignment over long runs. Flat irons are especially useful in commercial and industrial settings where multiple cables need organized support.

Design and Features

Flat irons often come with lengthwise or longitudinal slots (e.g., 7x35 mm) to allow flexible attachment points for bolts and fasteners. This slotted design enables easy adjustment of cable tray positions and accommodates different tray sizes. They are supplied in predefined lengths, commonly up to 3 meters, and can be customized in increments to fit specific installation requirements.

Edges and bolt holes are usually not rounded or pre-treated for paint, focusing on structural functionality.

Material and Application

Flat irons are generally made from high-strength steel or stainless steel to provide durability and corrosion resistance, suitable for indoor and outdoor installations. They are used to support various types of cable trays, including ladder, ventilated, and solid-bottom trays, ensuring that cables remain secure and properly spaced. In addition to supporting power cables, flat irons can also be used for control, instrumentation, and communication cables.

Installation Considerations

When installing flat irons, it is important to consider the load capacity of the cable tray system, the spacing between supports, and the type of cables being managed. Properly installed flat irons help maintain the minimum bend radius for cables, prevent excessive sag, and allow for future expansion or modification of the cable system. In summary, a flat iron is a versatile and essential support component in cable tray systems, providing structural stability, flexibility in mounting, and reliable support for electrical cabling in a wide range of industrial and commercial applications.