There are various types of earthing systems used in electrical installations. The most common type is the main earth electrode, also called ground rod. It is a long metal rod that is driven into the ground. The ground rod is connected to the electrical system’s grounding conductor. The grounding conductor is usually a copper wire that is run from the main earth electrode to the service panel.
The second type of earthing system is the plate electrode. It is a metal plate that is buried in the ground. The plate electrode is also connected to the grounding conductor.
The third type of earthing system is the ground loop. A ground loop is a loop of copper wire that is buried in the ground. The ground loop is connected to the grounding conductor at two points. One point is at the service panel. The other point is at the main earth electrode.
The fourth type of earthing system is the grid system. A grid system is a network of copper wires that are buried in the ground. The grid system is connected to the grounding conductor at multiple points.
The fifth type of earthing system is the buried pipe system. A buried pipe system is a network of pipes that are buried in the ground. The buried pipe system is connected to the grounding conductor at multiple points.