Question 9042 of 871 · Maryland Journeyperson Electrician Exam
What is the minimum size of the copper conductor used to bond an equipotential plane in an agricultural building?
Exactly one answer is correct.
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Correct answer to question 9042
- C: 8 AWG solid copper
Explanation
The equipotential plane is bonded to the building electrical grounding system with a solid copper conductor not smaller than 8 AWG, which may be insulated, covered, or bare. The plane itself uses wire mesh or other conductive elements embedded in the concrete.
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