Because of the 180-degree phase shift between any two of the three single-phase winding voltages in a 3-phase AC, 4-wire, 208Y/120-volt building or other-structure electrical-power distribution system, the two 120-volt ratings add vectorially:
The line voltage is 173% or the Ö3 greater than the single-phase 120-volt winding voltage.
A) True
B) False
Show Answer
Answer:B
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