Neutral earthing is a system where the earth electrode is connected to the neutral conductor of an electrical system. The earth electrode may be a rod, plate or other type of conductor buried in the earth.
The main purpose of neutral earthing is to provide a safe path for current to flow in the event of a fault. When a fault occurs, the current will flow through the earth electrode to the ground instead of through the electrical system. This will help to prevent damage to the electrical system and reduce the risk of injury to people.
Neutral earthing is required by law in many countries and is typically used in high voltage electrical systems. It is important to note that neutral earthing should not be confused with grounding. Grounding is a system that is used to protect people and equipment from electrical shock.