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The minimum acceptable insulation resistance value is calculated using the following formula:

Rinsulation= (Vrated + 1 ) x (304.8 / L )

Where:

Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms;

Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and

L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).

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Related Questions

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