Is it true that a GFCI is sensitive to small leaks of current?

A Ground Fault Circuit Interrupter (GFCI) is indeed designed to be sensitive to small leaks of current. Its primary function is to detect any imbalance between the outgoing current and the returning current in a circuit. If it senses that the current flowing back is less than what was sent out, typically due to a leakage of electrical current, it triggers to cut off power, preventing potential electric shock.

This sensitivity is crucial in environments where moisture or conductive materials may create unexpected paths for electricity, making GFCIs essential for enhancing safety, particularly in bathrooms, kitchens, and outdoor settings.

In contrast, the assertion that being sensitive to small leaks of current is false is incorrect, as that is precisely what GFCIs are designed to do. The mention of conditions such as high voltage or wet environments does not limit a GFCI’s function to those specific scenarios, as its operation is consistent in any situation where it monitors for current imbalances.