When earth fault occurs______________?
Correct answer: A. voltage potential at the earth mat increases due to grounding
- A. voltage potential at the earth mat increases due to grounding
- B. voltage potential at the earth mat decreases due to grounding
- C. voltage potential at the earth mat remains zero irrespective of fault
- D. none of the above
Explanation
During an earth fault, fault current flows through the grounding conductor and earth mat, producing a voltage rise relative to remote earth. The mat is therefore not at zero potential during the fault.
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