Cable trays should be visually inspected for signs of corrosion, damage, or misalignment. Any debris or foreign material should be removed from the tray and its supports. A proper cleaning and inspection should be performed at least once a year or more frequently in harsh. In this detailed guide, we'll explore the essential inspection methods for cable trays, focusing on maintaining their structural integrity, load-bearing capacity, fire resistance, and more. Cable trays are available in a number of different configurations, including ladder, ventilated trough, ventilated channel, solid bottom, wire mesh, single rail and. Thus while maintenance, installation and inspection of cable trays, the following concerns should be given attention. Overloading cable trays can lead to breakdown of the tray, its connecting points. This section explains where cable trays are appropriate and where their use is restricted. The process described here takes a systematic approach to ensuring that cable tray installations meet safety, reliability, and project-specific needs while following to. 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.