A large telecommunications facility, by most codes, must be designed with an EPO switch located at:

Question

Options

• AThe facility entrance or exit
• BThe main power panel
• CBetween the main power panel and the transformer
• DNear each bank of equipment in the telecommunications space

• A
  72% (49)
• B
  7% (5)
• C
  16% (11)
• D
  4% (3)

Explanation

Building and electrical codes (including NFPA 75, NFPA 76, and various local codes) require Emergency Power Off (EPO) switches to be placed at the entrance or exit of a telecommunications or data center facility. This placement allows emergency responders such as firefighters to quickly de-energize the entire space before or while entering, reducing the risk of electrocution during an emergency. Placing the EPO at the entrance/exit ensures it is accessible without needing to enter the potentially dangerous energized space. Locating it at the main panel, transformer, or near equipment banks would require personnel to move deeper into the facility to operate it, defeating its safety purpose.

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