b. Evaluate the corresponding soil ionization gradient given the 50 Hz resistance measurement, Ro of 40 2 and Ri of 20 2
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b. Evaluate the corresponding soil ionization gradient given the 50 Hz resistance measurement, Ro of 40 2 and Ri of 20 2
b. Evaluate the corresponding soil ionization gradient given the 50 Hz resistance measurement, Ro of 40 2 and Ri of 20 22. The soil resistivity, P. is 80 12-m where a lightning current of 40 kA pass through the footing impedance. (3 marks) Answer:
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