[Question of the Day] Utility Engineering – Mechanical & Electrical – 20190821
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““Zero and ground are kept separate” should be understood as that () and () are always kept apart. A. Neutral wire ； Neutral wire N ； B、Neutral wire ； Protection wire PE ； C、Neutral line N ； Protection wire PE ； D、Neutral line N ； Phase wire Answer: C
B、Neutral wire； Protection wire PE ；