Question 13079 of 749 · Maryland Journeyperson Electrician Exam
Three 4 AWG THHN (0.0824 sq in each) and one 8 AWG THHN (0.0366 sq in) are to be installed in EMT. Which is the smallest trade size permitted? (40 % areas: 3/4 in 0.213, 1 in 0.346, 1-1/4 in 0.598 sq in)
Exactly one answer is correct.
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Correct answer to question 13079
- C: 1 in
Explanation
Total area is 3 x 0.0824 + 0.0366 = 0.2838 sq in. This exceeds 0.213 sq in for 3/4 inch EMT but fits within 0.346 sq in for 1 inch EMT.
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