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  • Users: johnhos
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  1. johnhos

    Determining Soil Resistivity w/ Fall of Potential Method

    Since the fall of potential method (used for measuring ground grid resistance) and the 3 point method (used for measuring soil resistivity) are basically the same process, except one drives a ground rod and one uses existing grid; Is it possible to measure a substation’s soil resistivity using...
  2. johnhos

    Driving Point vs Equiv Circuit Shunt Resistance

    im trying to determine the resistance to ground of a substation, the software im using gives two resistances, driving point and equivalent circuit shunt resistance, does anyone know the difference?
  3. johnhos

    MODELING FOUNDATIONS IN WinIGS

    Does anyone know how to model a foundation in a substation using WinIGS. I am designing the grounding system and get very different results depending on how I model the foundation. I'm unsure if I should use the re-enforced concrete block electrode(electrically isolated since we will not connect...

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