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Practice quizzes / IMSA Traffic Signal III Practice Questions - IMSA Traffic Signal Senior Field Technician Level III Certification Exam Exam / Question 103131
Practice question

What voltage is typically used for the AC power supply to traffic signal cabinets in the United States?

  1. 120V single-phase
  2. 208V three-phase
  3. 240V single-phase
  4. 480V three-phase

Answer: A — 120V single-phase

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: IMSA Traffic Signal III Practice Questions - IMSA Traffic Signal Senior Field Technician Level III Certification Exam Exam →
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