Answer / niharika

Stones/gravel is provided to reduce step potential and touch potential.
also avoids the accumulation of water in rainy season as it increase the step potential and touch potential.

Answer / shivaji mande

-Reducing Step and Touch potentials during Short CircuitFaults
-Eliminates the growth of weeds and small plants in the yard
-Improves yard working condition
-Protects from fire which cause due to oil spillage from transformer and also protects from wild habitat.

Answer / karthik kv

Stones/Gravels are used in substations mainly for two reasons:
1. to prevent vegetation and
2. to maintain the soil resistivity/substation earth
resistance when rainfall occurs.

Answer / pnverma19

Stone are use in yard to increase a foot surface area bcoz surface area increase resistance increase so in faulty condition save fr human life all current flow through the earthing bcoz current always follow a low resistance path.....

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