Which power distribution component is closest to the data center IT load?

Question

Options

• ASwitchgear
• BWet cell battery
• CDiesel generator
• DUninterruptible power supply

• A
  7% (2)
• B
  14% (4)
• D
  79% (22)

Explanation

An Uninterruptible Power Supply (UPS) sits directly between the utility power infrastructure and the IT equipment (servers, storage, networking gear), making it the closest component to the actual load. The UPS provides immediate, seamless power protection without any switching delay, which is critical for sensitive computing equipment.

Switchgear (A) is wrong because it operates at a much earlier stage in the power distribution chain, managing high-voltage incoming utility power before it reaches downstream components. A wet cell battery (B) is a component that may reside inside or alongside a UPS, but it is not itself a distribution component positioned closest to the load. A diesel generator (C) is a backup generation source that sits at the front of the power chain and only kicks in after utility power fails, typically with a delay of several seconds.

Memory tip: Think of the power path as a journey - utility power travels through switchgear, then transformers, then the UPS, and finally to the IT load. The UPS is the last stop before the servers, acting as a "bodyguard" that stands right next to the equipment it protects.

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