Final answer:
Grounding is the process of fixing a conductor at zero volts by connecting it to the earth. The grounding electrode conductor connects to the neutral terminal bus of a main panel or electrical system.
Step-by-step explanation:
Grounding is the process by which a conductor is fixed at zero volts by connecting it to the earth with a good conductor. The grounding electrode conductor, also known as the neutral, connects to the neutral terminal bus of a main panel or electrical system.
In electrical systems, the neutral wire is the return path for the current to complete the circuit. By grounding the neutral wire, it is forced to be at zero volts relative to the earth. This ensures safety and eliminates the risk of electrical shock.
For example, in a three-wire system connected to an appliance, the grounding electrode conductor connects to the case of the appliance through the green ground wire, forcing the case to be at zero volts.