The only purpose of a ground rod or a group of ground rods forming a ground field is to have a designed electrical path to dissipate a static discharge voltage (which can be lightning or other forms of static electricity) to the earth. When you ground electricity you will be using a ground rod in most cases.Click to see full answer. People also ask, what is the purpose of a grounding rod or wire?The equipment grounding system is designed to protect us against electricity that comes from the utility transformer. Its purpose is to connect electrical equipment to the service to provide a safe path back to the source so that if there’s a ground fault it will complete the circuit and trip the breaker. what is the purpose of a ground? In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. Electrical circuits may be connected to ground (earth) for several reasons. Additionally, is a grounding rod necessary? Grounding rods are necessary as is the evaluation of grounds within the home i.e. measuring potential difference between a water faucet and ground.Why is grounding important?One of the most important reasons for grounding electrical currents is that it protects your appliances, your home and everyone in it from surges in electricity. If lightning was to strike or the power was to surge at your place for whatever reason, this produces dangerously high voltages of electricity in your system.