The NEC requirements for cable tray grounding are found in NEC Sections 318-3c, 318-7, and Table 318- 7 (b) (2). Cable tray may be used as the Equipment Grounding Conductor (EGC) in any installation where qualified persons will service the installed cable tray system. To comply with code requirements and ensure system safety, metallic trays must be electrically continuous, properly bonded at all splice points, and securely connected to the building's grounding system. It is essential that the grounding of cable tray systems, including the cables in the tray systems, is inspected for compliance with the grounding requirements in the National Electrical Code (NEC) BEFORE the cabling in the tray is energized and BEFORE cable is installed. If cable is installed. NEC Article 392 outlines the key rules for installing and maintaining industrial cable tray systems. Here's what you need to know: Cable Types: Only use. ned herein and with other Sections of this Specification as applicable to the completion of the installation. The approved vendor, designated agent, or employee is held responsible to be familiar with the provisions contained herein and of ground and bonding infrastructure as describ able with the. In cabling projects, common wiring methods include overhead lines, cables, steel pipes, cable trays, and busbars.
