Practice question

What is the purpose of a ground rod at a traffic signal installation?

  1. To anchor the signal pole to the foundation
  2. To provide a low-resistance path to earth for fault currents and lightning protection
  3. To mark the boundary of the signal's jurisdiction
  4. To support the weight of the signal cabinet

Answer: B — To provide a low-resistance path to earth for fault currents and lightning protection

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Practice more: IMSA Traffic Signal I Practice Questions - IMSA Traffic Signal Technician Level I Certification Exam Exam →