FS S1900-8T Guide De Démarrage Rapide page 7

4. Installation is completed.
Grounding the Switch
1. Connect one end of the grounding cable to a proper earth ground,
such as the wall in which the switch is mounted.
2. Secure the grounding lug to the grounding point on the left side of
the switch with the washer and screws.
CAUTION:
connections have been disconnected.
6 EN
The earth connection must not be removed unless all supply