Question 2039 of 749 · Maryland Journeyperson Electrician Exam
Service conductors installed under a building are considered outside the building when they are covered by at least how much concrete?
Exactly one answer is correct.
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Correct answer to question 2039
- A: 2 in.
Explanation
Conductors installed under not less than 2 in. of concrete beneath a building, or in a raceway encased in at least 2 in. of concrete or brick within the building, are considered outside. Conductors under 18 in. of earth beneath a building also qualify. See 230.6.
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