Steps to Measure Earth Pit Resistance

Steps to Test Earth Pit Resistance Measurement - Best fit for SOP 

Fig - Earth Resistance Tester Wiring

• Clean the Earth Pit Properly.

• The Earth Resistance Tester will be having 4 terminals namely P1, P2, C1 & C2.

• Ensure the pointer is reading zero, when the equipment is not operated .  If required, adjust the zero adjustment screw and set the pointer at zero.

• Short terminals P1 & C1 and connect it to the Earth Pit Electrode whose value is to be tested.

• Place the terminal rod C1 at a distance of 5 - 30 m away from the earth pit, driven up to a depth of 1m into the ground.

• Place the terminal rod P1 at a distance of 2 - 15 m away from the earth pit, in the same axis between the earth pit and the terminal rod, driven up to a depth of 1m into the ground.

• Rotate the handle of the tester until the pointer comes to rest without oscillations.

• Read and record the Resistance value in Ohms.