The ___ conductor is used to help prevent a shocking hazard in the event that the hot conductor comes in contact with the case or frame of the appliance.

• A. Neutral
• B. Insulation
• C. Grounding
• D. Bonding

Answer: (C)

Grounding keeps metal parts safe by giving fault current a low-impedance path to the earth. If the hot conductor accidentally touches the appliance case, the fault current travels through the grounding conductor to earth, causing the circuit breaker to trip or a fuse to blow, which quickly disconnects power and prevents a shock. Insulation stops contact but cannot carry fault current once contact occurs. Neutral carries normal return current and isn’t relied on to clear a fault at the appliance, while bonding helps keep exposed metal surfaces at the same potential; the safety mechanism that rapidly removes the hazard is the grounding path.