Lightning arresters protect which components from lightning effects?

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Prepare for the Independent Electrical Contractors (IEC) Year 4 Exam. Utilize flashcards, multiple choice questions, hints, and explanations to excel in your certification journey. Master your knowledge and boost your exam readiness.

Multiple Choice

Lightning arresters protect which components from lightning effects?

Explanation:
Lightning can drive high surges onto power lines, threatening insulation and equipment. A surge arrester detects these overvoltages and provides a low-impedance path to ground, clamping the voltage that reaches connected equipment. By keeping the voltage within safe limits, arresters protect downstream components such as panelboards, transformers, and the wiring that connects them. This broad protection is why the best answer includes all three components rather than just one.

Lightning can drive high surges onto power lines, threatening insulation and equipment. A surge arrester detects these overvoltages and provides a low-impedance path to ground, clamping the voltage that reaches connected equipment. By keeping the voltage within safe limits, arresters protect downstream components such as panelboards, transformers, and the wiring that connects them. This broad protection is why the best answer includes all three components rather than just one.

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