Planning for renovation or replacement: Based on the inspection, you determine which cable ducts need to be repaired, insulated, or replaced. Use of suitable materials: For example, corrosion-resistant cable ducts such as PVC or galvanized steel, or flexible cable . Proper Sizing: Selecting the appropriate tray size ensures adequate space for current and future cable additions, preventing overcrowding and maintaining system efficiency. Secure Mounting: Ensuring that cable trays are securely mounted and supported at regular intervals prevents sagging and. Cable trays refer to a rigid structural system composed of channel or ladder straight sections, elbows, components, and supports (arm-type brackets), hangers, etc. to provide close support for cables. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. Environmental Factors: Select the tray material based on the conditions it will face. Corrosion and wear: Metal cable trays in particular can rust due to moisture and wear, which poses a safety risk.