Science, asked by meenakshimagar9251, 1 year ago

Why are coal and salt added to the pit in the ground?

Answers

Answered by Anonymous
3
The whole purpose of providing earthing is to discharge the leakage/fault current safely to the ground. Hence better the conductivity of the soil or lesser its resistance, more beneficial it is! Addition of coal and water ( also known as conditioning of pit) decreases soil resistivity. Industrial standards requires that the soil resiativity be less than 5 ohm
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