MCC-NH Gas Fitters Practice Exam

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What type of current does an Effective Ground-Fault Current Path deal with?

AC current only
DC current only
Both AC and DC current
Ground current

The correct answer is: Both AC and DC current

An Effective Ground-Fault Current Path is designed to safely direct fault currents to the ground, and it can handle both alternating current (AC) and direct current (DC). In electrical systems, ground faults can occur in environments where both AC and DC systems are present, such as in certain industrial applications or renewable energy installations involving solar panels and batteries. The ability to manage both types of current is crucial for ensuring the safety and reliability of electrical installations. If a ground fault occurs, the current will follow the path of least resistance to the ground, regardless of whether the current is AC or DC. Therefore, systems must be equipped to handle and mitigate risks associated with both types of current during ground fault conditions. This is why the answer indicates that the Effective Ground-Fault Current Path deals with both AC and DC current.