What type of grounding system uses metal rods driven into the earth?

The choice of a grounding electrode system is correct because this term specifically refers to the methods and components used to create a direct electrical connection between an electrical system and the earth. Metal rods driven into the earth, often referred to as grounding rods or electrodes, serve to dissipate electrical energy safely into the ground. This is essential for protecting electrical systems and personnel from the dangers of electrical faults, lightning strikes, and surges.

A grounding electrode system typically consists of various components including ground rods, plates, or other conductive elements that establish a low-resistance path to the earth. Proper grounding is crucial for the safe operation of electrical systems, providing a reference point for voltages and protecting against electrical hazards.

The other options refer to different grounding concepts. For instance, a bonding system deals with connecting various conductive parts to ensure that they have equal potential, preventing electric shock hazards. An indirect grounding system may involve grounding techniques where the connection is not directly to the earth, while a floating ground system does not have a direct electrical connection to the earth, potentially creating a higher risk during electrical faults.