Question 8063 of 749 · Maryland Journeyperson Electrician Exam
A transformer with primary-only protection has a rated primary current below 2 A. What is the maximum primary overcurrent device rating?
Exactly one answer is correct.
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Correct answer to question 8063
- B: 300 percent of rated primary current
Explanation
Table 450.3(B) permits up to 300 percent for primary currents less than 2 A where only primary protection is provided.
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