Home Inspection Electrical Practice Test

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Prepare for your Home Inspection Electrical Test with our comprehensive study guide. Equip yourself with flashcards, multiple-choice questions, and detailed explanations. Be ready to excel on your exam!

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How many amps are required to trip a GFCI?

1 to 3 milliamps
5 to 8 milliamps
10 to 15 milliamps
20 to 25 milliamps

The correct answer is: 5 to 8 milliamps

A Ground Fault Circuit Interrupter (GFCI) is designed to protect people from electric shock by monitoring the electrical current flowing through a circuit. It will trip and disconnect the circuit when it detects an imbalance in the current, which typically occurs when current flows through an unintended path, such as through water or a person. The correct answer identifies that a GFCI typically trips when a ground fault occurs, and this commonly happens at a threshold of about 5 to 8 milliamps. This low level of current is intentionally set to provide protection for individuals, particularly against potentially lethal shocks. The sensitivity to such low current is crucial in ensuring that the device functions correctly in various situations where a shock hazard may exist. This range effectively balances safety with the need for the device to not trip unnecessarily during normal operation. Other options provided represent higher thresholds, which would not provide the same level of protection and could allow higher levels of current to potentially cause harm before the GFCI activates.