Elevator trunking operation process (7)

Protective ground wire installation in the cable trough
(1) The protective earthing wire shall be laid on the side of the line groove according to the design drawings. The bolt at the grounding point shall not be less than M6, and the nut, flat pad and spring washer shall be fastened.
(2) The width of the metal trunking is not more than 100mm, and the joints of the two ends are connected by the connecting plate (when the connecting plate is used as the grounding wire), the fixing point of each end bolt is not less than 4, and the width is not less than 200mm. The protective grounding wire connected to the board has not less than 6 bolt fixing points at each end.