Question 10022 of 731 · Texas Journeyman Electrician Exam
For sinusoidal ac, the low-voltage contact limit used in Article 680 is how many volts RMS?
Exactly one answer is correct.
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Correct answer to question 10022
- D: 15 volts
Explanation
The low-voltage contact limit is 15 volts RMS for sinusoidal ac, 21.2 volts peak for nonsinusoidal ac, 30 volts for continuous dc, and 12.4 volts peak for dc interrupted at 10 to 200 Hz. Equipment operating at or below this limit poses a low shock risk in water.
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