1. Earhing System.
2. Earth resistance.
3. Testing of earth resistivity.
4. Testing of earth resistance.
5. Earth system in low voltage consumer's premises.
6. Number of earth electrodes in high voltage consumer's sub-station
7. Touch, Step and Transfer Voltage.
8. Calculation of Step-Voltage.
9. Calculation of Touch-Voltage.
10. Transfer voltage.
11. Minimum length of earth strip.
12. Tower footing resistance.
13. Bentonite soil.
14. Earth Terminal.
15. Classification of earth system.
16. Method of reducing earth resistance.
17. Plate Electrode.
18. Pipe Electrode.
19. Size of earth conductor.
20. Effect of direct current on earth pit.

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