Question 15039 of 790 · California General Electrician Exam
Why are GFCIs effective in protecting people from electrocution?
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Correct answer to question 15039
- A: They trip when current to ground of about 5 milliamperes is detected
Explanation
A Class A GFCI opens the circuit when it detects a ground fault current of about 4 to 6 milliamperes, below levels that typically cause ventricular fibrillation. It does not protect against overloads.
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