Question 1069 of 749 · Maryland Journeyperson Electrician Exam
An insulation resistance tester (megohmmeter or megger) checks insulation by:
Exactly one answer is correct.
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Correct answer to question 1069
- A: Applying a high DC test voltage and reading resistance in megohms
Explanation
A megohmmeter applies a high DC voltage, commonly 500 or 1,000 V, between conductors or to ground and displays the leakage resistance in megohms. It is used on de-energized equipment.
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