One Reason Why Three-Phase Power Is Superior to Single-Phase Power

question 18

Multiple Choice

One reason why three-phase power is superior to single-phase power is that in a balanced three-phase system, the conductors need be only about ____% of the size of conductors for a single-phase two-wire system of the same kVA (kilovolt-amp) rating.

• A) 33.3
• B) 60
• C) 75
• D) 85

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