Because some building or other-structure’s 3-phase AC electrical-power distribution systems operate with the center leg (Line 2 or Phase B) referenced or connected directly to earth ground (service grounding-electrode system ― corner-ground delta),as a corner-ground delta, electrical reversal of a 3-phase AC induction motor is normally limited to the interchange of lines __________.
A) T1 and T3
B) L1 and L3
C) L1 and T3
D) Either L1 and L3 or T1 and T3
Show Answer
Answer:D
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