According to the electrical needs of the occupant of a building or other structure, the incoming service may be rated as either single-phase or 3-phase AC.
Single-phase AC services are normally good for services rated up to ___________ amperes.
Beyond ___________ amperes, the service is normally rated 3-phase AC.
A) 400; 400
B) 500; 400
C) 500; 500
D) 400; 500
Show Answer
Answer:A
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