NM CID EL-1 Practice Questions - New Mexico CID EL-1 Electrical Distribution Systems, Including Transmission Lines Examination Exam

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A typical underground residential distribution (URD) primary cable is a concentric-neutral jacketed cable. The concentric neutral is:

an optional communications shield that must be isolated from ground a serving grounded conductor of copper wires or tapes around the insulation that is grounded and carries unbalanced and fault current the phase conductor a steel armor that replaces the need for a neutral

Correct Answer:

a serving grounded conductor of copper wires or tapes around the insulation that is grounded and carries unbalanced and fault current

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