According to the National Electrical Code (NEC), cable trays must be grounded if they are used as a part of the electrical system to ensure that fault currents can be safely conducted. This article provides a comprehensive framework that governs various aspects of cable tray installations, including the types of cables that are deemed acceptable for use, requirements for grounding and bonding, and stipulations regarding tray fill capacity. Additionally, it addresses critical. The primary rulebook used in the safe use of cable trays is NEC Article 392. This is a description of how to select, install, and support these metal or plastic frames, on which electrical wires are installed. Each multi-conductor cable with its individual EGC conductor. It is also covered in NEMA Standard VE-2.
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