Question 13052 of 749 · Maryland Journeyperson Electrician Exam
Six current-carrying 8 AWG THHN copper conductors are in one raceway at 30 °C ambient, and all terminations are rated 75 °C. What is the maximum ampacity that may be used for each conductor?
Exactly one answer is correct.
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Correct answer to question 13052
- D: 44 A
Explanation
The derated value from the 90 °C column is 55 x 0.80 = 44 A, while the 75 °C termination limit is 50 A. The lower of the two governs, so 44 A may be used.
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