Submitted Questions

  • 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.


    • Feb 19th, 2018

    There are seven factors for findout the derating factor value. they are temperature correction factor, ground temperature correction factor, cable distance correction factor, cable depth correction fa...


    • Dec 21st, 2016

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