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

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NESC 2007 Rules 235C and 238 create a communication-worker safety zone. The basic vertical clearance in that zone between supply conductors or equipment and communication conductors or equipment is:

12 inches 30 inches for all supply voltages including ungrounded primaries 40 inches (with specified reductions to a grounded neutral or certain streetlight hardware) 10 feet

Correct Answer:

40 inches (with specified reductions to a grounded neutral or certain streetlight hardware)

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