For such installations, it is best to use an insulated conductor and to remove the insulation where bonding connections are made to the cable tray, raceways, equipment enclosures, etc. with tin or zinc plated connectors. Cable tray failures can cause operational disruptions, equipment damage, and safety risks. This guide discusses common cable tray problems, from loosening and corrosion to grounding issues and installation errors, along. If an EGC cable is installed in or on a cable tray, it should be bonded to each or alternate cable tray sections via grounding clamps (this is not required by the NEC® but it is a desirable practice). In addition to providing an electrical connection between the cable tray sections and the EGC, the. However, like any other infrastructure, cable trays are prone to failures that can result in serious safety hazards, financial losses, and downtime. Common mechanical problems include: Sagging and Deflection: Excessive bending occurs when trays carry loads beyond their designed capacity or when support intervals are.
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