Question 1022 of 749 · Maryland Journeyperson Electrician Exam
Compared with a copper conductor of the same size and length, an aluminum conductor has:
Exactly one answer is correct.
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Correct answer to question 1022
- A: Higher resistance
Explanation
Aluminum conducts only about 61 percent as well as copper, so a same-size aluminum conductor has more resistance. That is why aluminum is usually installed one or two sizes larger for the same load.
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