Electrician Red Seal · Question
What does a high resistance reading when performing a Megger test on a motor winding indicate?
A Megger test measures insulation resistance. A high resistance reading (typically in megaohms) indicates the insulation is in good condition and effectively pr
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Question: What does a high resistance reading when performing a Megger test on a motor winding indicate?
Answer options:
- A short circuit in the winding. ✅ Excellent insulation integrity.
- An open circuit in the winding.
- A ground fault to the motor frame.
Correct answer: Excellent insulation integrity.
Explanation: A Megger test measures insulation resistance. A high resistance reading (typically in megaohms) indicates the insulation is in good condition and effectively preventing current leakage.
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