Discussion
According to Indian Electricity Rule-48, the maximum permissible value of leakage current that should not exceed beyond _______ times of full load current.
Answer: C
The leakage current must not exceed 1/5000 of the full load current.
Rule 48 of the Indian Electricity Rules, 1956 deals with the insulation of installations: the insulation resistance between conductors and earth must be such that the leakage current does not exceed one five-thousandth of the maximum current supplied to the installation. With a full load current of 50 A, for example, the leakage may be at most 10 mA.
1/1000 and 1/2000 would allow far more leakage than the rule permits, and 1/10000 is stricter than the rule requires.
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