Cable meggering is a diagnostic process used to test the insulation resistance of electrical cables using a megohmmeter, commonly known as a "megger." This test helps identify insulation breakdown, moisture ingress, or aging in cables, which can lead to faults or short circuits. Meggering is performed by applying a high DC voltage between conductors and earth, then measuring the resistance. High resistance indicates good insulation, while low resistance suggests potential issues. Regular cable meggering is essential in maintenance routines for industrial, commercial, and residential electrical systems to ensure safety, prevent electrical failures, and extend the lifespan of the cable infrastructure.
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