Most electrical-power distribution systems within a building or other structure operate with one circuit conductor, normally the ____________ conductor, referenced to (directly-connected to) earth ground at its point of entry into the building or other structure with connection to the service-entrance ____________ conductor, or at its point of origin when a transformer is used to separately-derive a second lower-voltage electrical-power distribution within a building or other structure.
A) neutral; neutral
B) neutral; neutral
C) high; neutral
D) low; neutral
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Answer:A
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