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protective conductor connection. The filter must be solidly and permanently
connected with the ground potential so as to preclude the danger of electric shock
upon touching the filter if a fault occurs.
To achieve a protective ground connection for the filter:
Ground the filter with a conductor of at least 10 mm2 cross-sectional area.
Connect a second grounding conductor, using a separate grounding terminal
parallel to the protective conductor. (The cross section of each single protective
conductor terminal must be sized for the required nominal load.)