To test soil resistivity, connect the ground tester as shown in Fig. 1. Four earth ground stakes are positioned in the soil in a straight line, equidistant from one another. The distance between earth ground stakes should be at least three times greater than the stake depth.
Moreover, what is resistance of ground?
Ground Resistance or Impedance? The goal of any grounding system is to provide a low impedance path for fault or transient currents to the earth. “Grounding” may be described as the process of making this electrical connection to the general mass of the earth.
What is the resistance of the human body?
The NIOSH states "Under dry conditions, the resistance offered by the human body may be as high as 100,000 ohms. Wet or broken skin may drop the body's resistance to 1,000 ohms," adding that "high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 ohms".