What is the resistance of a ground rod?

3 ohms Click to see full answer. Accordingly, how many ohms is a good ground? 5 ohms Also, what is ground resistance? Ground resistance meters are a class of instruments designed to test the resistance of soil to the passage of electric current. Generally, ground resistance is tested to determine the adequacy of the grounding of an electrical system. Generally, the lower the ground resistance, the safer the electrical system. Moreover, how do you test a ground rod resistance with a multimeter? Use a digital multi-meter to measure the resistance of your electrical system. Connect your length of wire to a metal stake in the ground. Turn off the electricity at the testing location. Set your digital multi-meter to measure Ohms (likely shown by the Greek letter Omega). What is the minimum depth for a ground rod?b) Ground rods shall not be less than 5/8 inch in diameter by 8 feet in length. c) Ground rods shall be driven into the ground so that one end of the ground rod is at a minimum depth of 8 feet below the surface of the ground.