Electrician Red Seal · Question
What is the primary function of a ground fault circuit interrupter (GFCI)?
A GFCI detects an imbalance between the current flowing into a circuit and the current flowing out. This imbalance indicates current leaking to ground, which co
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Question: What is the primary function of a ground fault circuit interrupter (GFCI)?
Answer options:
- To protect equipment from short circuits
- To protect against overloads ✅ To trip when there is an imbalance of current between the ungrounded and grounded conductors
- To prevent arc faults
Correct answer: To trip when there is an imbalance of current between the ungrounded and grounded conductors
Explanation: A GFCI detects an imbalance between the current flowing into a circuit and the current flowing out. This imbalance indicates current leaking to ground, which could be flowing through a person, and trips the circuit to prevent electric shock.
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- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
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