SK0-004 · Question #629
A server technician is trying to minimize power outages using a UPS that is plugged into an outlet in the server room. Given this scenario, which of the following procedures should be followed to…
The correct answer is A. Ensure the UPS has a dedicated circuit. A UPS should be on a dedicated circuit so that no other load can trip the breaker or degrade power quality to the UPS.
Question
A server technician is trying to minimize power outages using a UPS that is plugged into an outlet in the server room. Given this scenario, which of the following procedures should be followed to minimize outages?
Options
- AEnsure the UPS has a dedicated circuit
- BEnsure the UPS circuit is shared with the office
- CEnsure the UPS is connected to the main UPS
- DEnsure the UPS is connected to a surge protector
How the community answered
(52 responses)- A88% (46)
- B4% (2)
- C6% (3)
- D2% (1)
Why each option
A UPS should be on a dedicated circuit so that no other load can trip the breaker or degrade power quality to the UPS.
A dedicated circuit ensures that only the UPS draws power from that breaker, eliminating the risk of other devices on the same circuit causing an overload trip that would cut power to the UPS and everything it protects. This is a standard data center electrical best practice aligned with NEC and TIA-942 guidance for critical load isolation. Without a dedicated circuit, incidental loads elsewhere on the same branch can cause outages that the UPS was intended to prevent.
Sharing a circuit with the office means office equipment could draw enough current to trip the shared breaker, defeating the purpose of the UPS.
Connecting a UPS to another UPS creates improper chaining that can overload the upstream device and violates manufacturer guidance.
Plugging a UPS into a surge protector can cause grounding issues and may interfere with the UPS's ability to condition power and switch to battery correctly.
Concept tested: UPS power circuit isolation in data center environments
Source: https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=70
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