Question 13032 of 731 · Texas Journeyman Electrician Exam
A 240 volt single-phase circuit of 10 AWG copper (10,380 circular mils) supplies 24 A at 150 feet one way. What is the voltage drop as a percentage of the supply voltage?
Exactly one answer is correct.
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Correct answer to question 13032
- D: 3.7 %
Explanation
VD = 2 x 12.9 x 24 x 150 / 10,380 = 8.95 V, and 8.95 / 240 = 3.7 %. Dividing by 120 V instead of the 240 V circuit voltage gives 7.5 %.
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