Question 15003 of 790 · California General Electrician Exam
When using a voltage tester to verify absence of voltage, what should be done immediately before and after the test?
Exactly one answer is correct.
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Correct answer to question 15003
- C: Verify the tester works on a known voltage source
Explanation
NFPA 70E requires verifying that the test instrument is operating satisfactorily on any known voltage source before and after the absence of voltage test. This live, dead, live method confirms that a no voltage reading is not caused by a failed tester.
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