What is the 4-Point Soil Resistivity Test? (Part 1)
Ask the Grounding Experts · Hosted by David R. Stockin, P.E.
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About This Episode
In this episode, E&S Grounding Solutions President David Stockin discusses the Wenner four-point method for testing soil resistivity. Selecting proper spacing of the four test probes must be considered when measuring the resistivity at various depths into the earth. It is important to investigate how the measurements may differ between seasons and weather conditions. The results of a soil resistivity test employing the Wenner method are an essential part of the soil model used when studying how fault current dissipates in the earth through the grounding system, and how personnel can be protected from dangerous step and touch potentials.
About the Host
David R. Stockin, P.E. is President and co-founder of E&S Grounding Solutions, Inc., a Service-Disabled Veteran-Owned Small Business (SDVOSB) specializing in electrical grounding and lightning protection engineering. David has performed grounding and lightning protection studies in over 160 countries across 6 continents and is an IEEE-accredited continuing education provider.
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