An additional ground called the equipment ground is furnished to provide another path from the tool or machine through which the current can flow to the ground. This safeguards the operator if the metal frame becomes energized. What is this extra ground called?

An additional ground called the equipment ground is furnished to provide another path from the tool or machine through which the current can flow to the ground. This safeguards the operator if the metal frame becomes energized. What is this extra ground called?

• A. Equipment Ground
• B. System Ground
• C. Ground Strap
• D. Bonding Conductor

Answer: (A)

Protective grounding provides a safe path for fault current to quickly return to the source, which helps trip the circuit and keep the operator from receiving a shock. The extra ground described is the equipment ground, a dedicated conductor that runs with the tool’s power cord and is connected to the metal frame and to the building’s grounding system. If the frame becomes energized, fault current travels through this low-impedance path to the source, causing the protective device to activate. Understanding what the other terms mean helps see why this is the right one. A system ground is the broader grounding of the electrical system, often tied to the neutral at the service entrance, not the specific protective path for a piece of equipment. A ground strap is typically a bonding method used to connect parts together, not the standard fault-current path for a tool. A bonding conductor helps equalize potential between metal parts to prevent shock, but it isn’t the intended path for fault current back to the source in normal operation.

Protective grounding provides a safe path for fault current to quickly return to the source, which helps trip the circuit and keep the operator from receiving a shock. The extra ground described is the equipment ground, a dedicated conductor that runs with the tool’s power cord and is connected to the metal frame and to the building’s grounding system. If the frame becomes energized, fault current travels through this low-impedance path to the source, causing the protective device to activate.

Understanding what the other terms mean helps see why this is the right one. A system ground is the broader grounding of the electrical system, often tied to the neutral at the service entrance, not the specific protective path for a piece of equipment. A ground strap is typically a bonding method used to connect parts together, not the standard fault-current path for a tool. A bonding conductor helps equalize potential between metal parts to prevent shock, but it isn’t the intended path for fault current back to the source in normal operation.