What is the main purpose of an earth ground connection?

The main purpose of an earth ground connection is to dissipate electrical surges and prevent shock or damage. This connection provides a path for excess electrical energy to safely flow into the ground, especially in situations where there may be faults, surges, or lightning strikes. By grounding electrical systems and devices, any surge in voltage can be redirected safely, reducing the risk of electrical shock to individuals and protecting sensitive equipment from damage. The earth ground thus plays a critical role in ensuring safety by preventing hazardous conditions that could arise from unexpected electrical events.