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DU0-001 · Question #148

Regarding power cabling, what is the minimum number of wires in a factory configured power whip?

The correct answer is C. 3 wires -- one hot, one neutral, and one ground. A factory configured power whip requires at minimum 3 wires because a complete, safe electrical circuit needs a path to deliver current (hot), a path to return current (neutral), and a safety ground to protect against faults. Option A is wrong because omitting the neutral means…

Power Systems in the Data Center

Question

Regarding power cabling, what is the minimum number of wires in a factory configured power whip?

Options

  • A2 wires -- one hot and one ground
  • B5 wires -- two hot, two neutral, and one ground
  • C3 wires -- one hot, one neutral, and one ground
  • D4 wires -- two hot, one neutral, and one ground

How the community answered

(43 responses)
  • A
    2% (1)
  • B
    16% (7)
  • C
    74% (32)
  • D
    7% (3)

Explanation

A factory configured power whip requires at minimum 3 wires because a complete, safe electrical circuit needs a path to deliver current (hot), a path to return current (neutral), and a safety ground to protect against faults. Option A is wrong because omitting the neutral means there is no return path for current under normal load, making the circuit non-functional. Option D describes a 240V single-phase configuration with two hots sharing one neutral, which is a specific higher-voltage arrangement, not the minimum baseline. Option B describes an even more elaborate multi-wire configuration that goes well beyond the minimum needed.

Memory tip: Picture a standard three-prong wall plug -- hot, neutral, ground. That three-wire arrangement is the simplest safe power connection, and a power whip is built on that same minimum foundation.

Topics

#power cabling#factory configured whips#electrical standards#power distribution

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