What are the requirements you must follow when grounding information technology equipment, where signal reference structures are installed?

  1. The signal reference structure(s) shall be bonded to an external ground ring with a maximum resistance-to-ground reading of 2 ohms.
  2. The signal reference structure(s) shall be bonded to any of the electrodes in the area of the information technology equipment (i.e., a structural metal member or metal water pipe system).
  3. The signal reference structure(s) shall be bonded to the equipment grounding conductor provided for the information technology equipment.
  4. There are no requirements for grounding or bonding in this situation.


Answer: C

As noted in 645.15, the signal reference structure(s) shall be bonded to the equipment grounding conductor provided for the information technology equipment.

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.