PSI Journeyman Exam Practice 2025 – Complete Online Preparation

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What is the purpose of a GFCI outlet?

To increase electrical flow

To protect against electrical shock by detecting ground faults

A GFCI (Ground Fault Circuit Interrupter) outlet is specifically designed to protect against electrical shock by detecting ground faults. It monitors the electrical current flowing through the circuit and can identify any imbalances that occur, often caused by water exposure, faulty appliances, or damaged wiring. When it senses a difference in the current entering and leaving the outlet – indicating that some of the current is leaking to the ground – it quickly shuts off the electricity. This rapid response can prevent serious injuries or fatalities due to electric shock.

The other options do not accurately reflect the primary function of a GFCI outlet. While increasing electrical flow, monitoring circuit power usage, or isolating electrical systems may have their own respective applications in electrical systems, they do not pertain to the protective role that GFCI outlets serve in ensuring user safety.

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To monitor circuit power usage

To isolate electrical systems

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