Mixture preferred for filling around the earth electrode for effective earthing is

Mixture preferred for filling around the earth electrode for effective earthing is

Right Answer is:

Coal-salt mixture

SOLUTION

Salt and coal are filled to maintain the moisture which reduces the resistance of the earth.

Charcoal is used to retain the moisture for a long duration also it is made of carbon which is a good conductor minimizing the earth resistance because it is an adsorbent and salt is added to increase the conductivity both these products help to pass the leakage current through the earth wire as early as possible to remove the chances of shock.

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