This guide discusses common cable tray problems, from loosening and corrosion to grounding issues and installation errors, along with strategies for prevention and resolution. Recognizing and addressing these failures early can prevent more severe issues. Cable trays, ladders & channel under normal. The first step in cable tray maintenance is cleaning and inspection. Cable trays should be visually inspected for signs of corrosion, damage, or misalignment. A proper cleaning and inspection should be performed at. In the DW type low-voltage cable fault location system, the combined use of the distance meter and the locator can conveniently complete the detection work. This damage may be represented by, for example, broken welds, bent ladder rungs or severely deformed side rails etc. It is recommended that the section is replaced rather than.