Question 13060 of 731 · Texas Journeyman Electrician Exam
Twenty current-carrying 12 AWG THHN copper conductors are in one raceway at 30 °C ambient. What is the adjusted ampacity based on the 90 °C column?
Exactly one answer is correct.
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Correct answer to question 13060
- D: 15 A
Explanation
For 10 to 20 current-carrying conductors the adjustment is 50 %, so 30 x 0.50 = 15 A. 13.5 A applies the 45 % factor, which starts at 21 conductors.
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