Explanation: Section 376.10(4) and 378.10(4) both permit a wireway to pass through a wall as long as the conductors remain accessible on each side of the wall and the section passing through the wall ...
Explanation: Section 250.52(A)(1) requires the pipe to be in direct contact with the earth for a minimum of 10 ft but no minimum depth is required. John Lupacchino is a senior design engineer with ...
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