For a system to be considered grounded, it must have what requirement?

To determine if a system is considered grounded, it is essential that at least one ground electrode is present, and it must be connected to a ground wire. This configuration ensures a safe and effective path for electrical fault currents to dissipate into the earth, thereby providing protection for both equipment and personnel against electric shock and damage.

The inclusion of a ground wire serves as the conductive path that connects the ground electrode to the electrical system, facilitating the discharge of excess voltage or current that may arise during a fault condition. Having this setup is critical in establishing a reliable grounding system that adheres to safety standards.

While some options suggest different configurations or quantities of ground electrodes and wires, the fundamental requirement remains that at least one ground electrode, connected by a ground wire, is necessary to classify a system as grounded. This simplicity in the grounding requirement ensures that even basic installations can achieve effective grounding while prioritizing safety.