![]() ![]() Ground resistance and Ground Potential Rise values of all electrodes.With European standard it is also possible to calculate the permissible touch voltage without presence of human body, taking into account the body resistance (Rb 50%) and possibly additional resistance between feet and ground surface Maximum permissible touch and step voltages as per EN and IEEE standards.Reduction factor of touch and step voltages due to a superficial thin layer (Cs) as per IEEE standard.Uniform or multilayer soil model parameters from on site measurements values of apparent resistivity with Wenner or Schlumberger methods.Minimum cross section of grounding system conductors for thermal specification.Split factor (r) as per EN standard or (Sf) as per IEEE standard.Decrement factor (Df) as per IEEE standard. ![]()
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