How much should the ground cable tray be raised
To maintain compliance and optimize system performance, best practice recommendations suggest keeping cable trays at 50% capacity or less. This approach not only supports proper airflow and cooling but also allows room for future expansion without compromising safety or efficiency. It involves connecting cable trays to the facility's grounding system, providing a low-impedance path for fault currents and protecting personnel. The metal in cable trays may be used as the EGC as per the limitations of table 392. 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.
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