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Exam (elaborations)
Transformers Level II Lesson 4: Understanding Transformer Overcurrent Protection (22 Questions; Third Year) questions and answers
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---5February 20252024/2025A+
- A 75-kVA, 3-phase transformer, 480-volt primary is supplied by 3 AWG THW copper feeder 
conductors and protected by a 100-ampere (inverse time) circuit breaker.The feeder conductors 
supplying the transformer are sized according to the Code. (All conductors and terminations are 
marked 75°C.)True 
The 100-ampere circuit breaker in the previous question protects the transformer according to 
Code.Tru
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