Calculating PDU Power Draw

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Can someone please explain how they got this answer (5kVA) in the most simplest terms possible? I am having a hard time understanding this video and watched several YouTube videos as well searched all over google but could find nothing or when did was still confused.

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A server technician is procuring and installing a single-phase rack PDU that will meet the following requirements:

- Maximum line current per phase: 30A

- Rate current per phase: 24A

- Maximum current draw: 6 x 16A

- Nominal voltage: 208V

Based on these requirements, which of the following can be implied regarding load capacity?

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A. Purchase a PDU with a minimum load capacity of 2kVA.

B. Purchase a PDU with a minimum load capacity of 3kVA.

C. Purchase a PDU with a minimum load capacity of 4kVA.

D. Purchase a PDU with a minimum load capacity of 5kVA.

Answer: D