A conductor used to connect non-current carrying parts of AC electrical equipment is known as what?

The conductor used to connect non-current carrying parts of AC electrical equipment is termed a grounding conductor. This conductor serves a vital safety function by providing a path for electrical current to safely dissipate into the ground in the event of a fault. When parts of electrical equipment become energized due to insulation failure or any fault condition, the grounding conductor directs this unwanted current away from individuals and sensitive equipment, reducing the risk of electric shock or fire.

In contrast, the other types of conductors listed have different purposes. A grounded conductor refers to a wire that is intentionally connected to the earth; it typically carries current back to the power source in a fault condition, which is not the primary function of a grounding conductor. A neutral conductor is specifically used in AC systems to provide a return path for electrical current and may carry current during normal operation. Phase conductors, meanwhile, are responsible for delivering the electrical power in the circuit. Thus, the grounding conductor is critical for safety by ensuring that non-current carrying parts do not present a hazardous condition if faults occur.