Derating factors for Cables Calculation

The cable's actual current rating will usually be lower than the standard (un-derated) value quoted by manufacturer’s brochures. How to find the Derating factors for depth of laying, grouping of cables, etc.

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Mohhamedibrahim

  • Dec 21st, 2016
 

Derating factors
1. Native soil of thermal resistivity
2. If Cable circuit to cable circuit crossing.
3. Wrong sheath bonding.

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