The standard single-phase AC service is normally rated 120/240-volt, 3-wire.
The two ungrounded service conductors ______________________ be fused or otherwise overload-overcurrent-protected at termination in the service equipment, whereas, the grounded neutral conductor ______________________ be fused or otherwise overload-overcurrent-protected, but must be re-grounded and made common to the building or other-structure bonding-grid / grounding-electrode system as well as the electrical-power distribution system’s equipment-grounding system.
A) must; cannot
B) cannot; must
C) cannot; cannot
D) must; must
Show Answer
Answer:A
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