1. Youdaoplaceholder0 Cable Tray shall have reliable electrical connection and be grounded (only for metal cable tray).
2. When it is permitted to use Molded Cable Tray to form a grounding main line loop, the following requirements shall be met. The connection resistance between the ends of the cable tray should not exceed 0.00033 ohms, and the insulating coating on the grounding holes should be removed. In neutral point directly grounded systems of 1KV and below, the grounding of the receiving equipment is connected to the grounding of the system neutral line. When a temporary power cut-off device is installed, the metal cross-sectional area in the stage length direction of the cable tray should not be less than the specified value.
When laying a grounding main line along the entire length of the cable tray, each section (including non-straight sections) of the cable tray should have at least one point reliably connected to the grounding main line.
4. For vibrating sites, spring coils should be installed at the connection points of grounding parts.
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