Where is the Power Distribution Cabinet located in data halls?

• A. In the security office
• B. On the roof
• C. At the end of each hot/cold aisle
• D. In the facility mezzanine

Answer: (C)

In data halls that use hot/cold aisle containment, power distribution is arranged to serve rows efficiently while keeping cables tidy and airflow clear. Placing the Power Distribution Cabinet at the end of each hot/cold aisle lets it fed the racks in that row with short, straightforward feeders and gives technicians easy access for maintenance. This location also minimizes voltage drop, reduces cable clutter along the floor, and aligns with the aisle-based layout so power and cooling work together smoothly.

Putting it in a security office, on the roof, or in the facility mezzanine would make the distribution harder to access, remote from the rack loads, and could disrupt airflow or security zoning.