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Practice quizzes / IMSA Signal Construction Practice Questions - IMSA Traffic Signal Construction Technician Level II Certification Exam Exam / Question 102687
Practice question

What is the maximum allowable resistance for a grounding electrode at a traffic signal installation?

  1. 100 ohms
  2. 25 ohms or less per NEC requirements
  3. 1,000 ohms
  4. No maximum resistance requirement exists

Answer: B — 25 ohms or less per NEC requirements

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

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