Leed Practice Test & Exam Prep

Why is continuity of the protective earthing conductor tested before an installation is energized?

To confirm a low-resistance fault-current path is available To verify that the utility meter is calibrated To increase the resistance of exposed metalwork To reduce the nominal system frequency

Correct Answer:

To confirm a low-resistance fault-current path is available

Explanation:

Protective-conductor continuity confirms that exposed conductive parts are connected to the earthing system so fault current has an effective path that can operate protective devices.

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