Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). The ground resistance between all system parts shall be <. Cable tray may be used as the Equipment Grounding Conductor (EGC) in any installation where qualified persons will service the installed cable tray system. There is no restriction as to where the cable tray system is installed. These systems provide an efficient and adaptable solution for managing a wide range of cables, including power cables, control. 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. In cabling projects, common wiring methods include overhead lines, cables, steel pipes, cable trays, and busbars. It helps protect equipment from electrical faults, preventing fires and shocks. But, how do you make sure your grounding system works as it should? Let's dive in. Each DISTRIBUTION BOX and controller must be grounded. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used.