Crimp the lug on the cable and prepare the screw and washers according to the picture.
Cable with screw and washers
Locate where the grounding terminal is on the Zebra 3S.
Grounding terminal found on Zebra 3S
Install the fan washer (D) between the body of the Zebra 3S and the crimped lug (C). Its purpose is to bite through the anodized layer and make good contact. Tighten the screw at the recommended 1.3 Nm moment. The cable lug should not be able to rotate. Do not over-tighten the bolt; otherwise, the thread in the aluminum body might get damaged.
Cabel connected to Zebra 3S
Connect the device to the grounding terminal in the building. Protective ground should be marked with the following symbol.