Wire mesh (or basket) type trays, made from welded wire, are flexible and easy to install, making them popular for data and low-voltage applications. It is often used for backbone. The answer is simple: different cable characteristics and installation environments demand different tray designs. Cable weight, heat generation, bend radius, environmental exposure, and maintenance access all directly influence which cable tray type is technically appropriate and code-compliant. Load Capacity: Choose a tray that. en completely installed, without damage either to conductors or structural system use maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when. The cable tray that is most suitable for a project is based on the weight of the wires used and the setting of the building. This is super important for keeping everything running smoothly and safely. Keeping Cool (Heat Dissipation): Cables get warm when electricity flows through them. The right tray, especially one with.