what are cable earthing and bus earthing trucks?when and where they are used?

what are cable earthing and bus earthing trucks?when and
where they are used?

Question Posted / ranga2k8

what are cable earthing and bus earthing trucks?when and where they are used?..

Earthing trucks mainly used in HT side to prenent earth
fault.when fault occures huter in the trucks oparate and
prevent the damage to the panel

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