In a system where a 4160 to 2400 V three-phase transformer is fed by a feeder through a circuit breaker in a main distribution panelboard, and the transformer is 45 kVA with a 3% impedance, what is the maximum feeder circuit breaker size allowed by NEC 450.3?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Independent Electrical Contractors (IEC) Year 4 Exam. Access flashcards, multiple choice questions, and detailed explanations. Enhance your readiness and achieve your certification!

Multiple Choice

In a system where a 4160 to 2400 V three-phase transformer is fed by a feeder through a circuit breaker in a main distribution panelboard, and the transformer is 45 kVA with a 3% impedance, what is the maximum feeder circuit breaker size allowed by NEC 450.3?

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy