Ground circuits are typically made with a copper wire that is buried underground. The wire is connected to the power source at one end and to a metal rod or plate that is driven into the earth at the other end. The rod or plate is called a grounding electrode.
The grounding electrode must be in good electrical contact with the earth. This means that it must be in moist soil or sand. If the electrode is in dry soil or rock, it will not be able to conduct electricity effectively and the ground circuit will not be effective.
Ground circuits are an important safety feature in electrical systems. They help to protect people from electrical shock and can save lives.
