The Equipment Grounding Conductor is used to interconnect and bond:

• A. Grounding Metal Parts
• B. Metal Parts That Carry Current
• C. Neutral Parts
• D. Non-Current Carrying Metal Parts

Answer: (D)

The Equipment Grounding Conductor provides a safe, low-impedance path to earth for fault current and bonds metal parts that do not normally carry current so they stay at earth potential. By tying together enclosures, frames, and other exposed metal with the grounding system, any fault where a live conductor contacts that metal will send fault current back to the source quickly, causing the protective device to trip and reducing the risk of shock. These parts are kept at ground potential because they do not carry current under normal operation. In contrast, parts that carry current in normal operation are part of the circuit and aren’t bonded through the grounding path in the same way; the neutral is treated separately at service equipment in most systems. So the intended purpose of the equipment grounding conductor is to interconnect and bond non-current-carrying metal parts.