Type MC cable can be recognized as an equipment grounding conductor when it provides what?

Type MC cable can be recognized as an equipment grounding conductor when it provides what?

• A. A clear path for current
• B. A flexible installation
• C. A strong insulation
• D. An effective ground-fault current path

Answer: (D)

In this context, the recognition of Type MC (Metal Clad) cable as an equipment grounding conductor hinges on its ability to provide an effective ground-fault current path. This means that the metallic sheath of the MC cable can safely carry fault currents back to the source, thereby ensuring that protective devices can operate correctly in the event of a ground fault. The effectiveness of this grounding path is crucial for safety, as it minimizes the risk of electric shock or fire by facilitating the quick operation of circuit breakers or fuses during a fault condition. The grounding conductor must be capable of handling fault currents without significant voltage drop, ensuring that the protective devices trip reliably to disconnect the electrical supply. While a clear path for current and flexibility can be relevant in different contexts, they do not specifically address the requirements for grounding in electrical systems. Strong insulation is important for electrical safety, but it pertains more to preventing unintentional contact rather than serving as a grounding mechanism. Thus, the essential characteristic that qualifies Type MC cable as an equipment grounding conductor is its provision of an effective ground-fault current path.

In this context, the recognition of Type MC (Metal Clad) cable as an equipment grounding conductor hinges on its ability to provide an effective ground-fault current path. This means that the metallic sheath of the MC cable can safely carry fault currents back to the source, thereby ensuring that protective devices can operate correctly in the event of a ground fault.

The effectiveness of this grounding path is crucial for safety, as it minimizes the risk of electric shock or fire by facilitating the quick operation of circuit breakers or fuses during a fault condition. The grounding conductor must be capable of handling fault currents without significant voltage drop, ensuring that the protective devices trip reliably to disconnect the electrical supply.

While a clear path for current and flexibility can be relevant in different contexts, they do not specifically address the requirements for grounding in electrical systems. Strong insulation is important for electrical safety, but it pertains more to preventing unintentional contact rather than serving as a grounding mechanism. Thus, the essential characteristic that qualifies Type MC cable as an equipment grounding conductor is its provision of an effective ground-fault current path.