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    Electrical Wiring Industrial
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    Exam 1: Plans and Sitework
  5. Question
    If the Electrical System to Be Installed Operates at a Potential
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If the Electrical System to Be Installed Operates at a Potential

Question 3

Question 3

Multiple Choice

If the electrical system to be installed operates at a potential higher than _________volts, the nonmetallic conduit must be encased in not less than 2 in. (50mm) of concrete.


A) 300
B) 400
C) 500
D) 600

Correct Answer:

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