In a 240-volt corner-grounded delta, what is the voltage between C phase and ground?

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 $9.99Unlock 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 240-volt corner-grounded delta, what is the voltage between C phase and ground?

Explanation:
In a corner-grounded delta, one corner of the delta is tied to earth, fixing that phase at earth potential. That makes the voltage from the grounded phase to ground equal to zero. So the C phase, being the grounded corner, has 0 volts to ground. The line-to-line voltage stays 240 V, and the other phases to ground would each be 240 V, not 120 V.

In a corner-grounded delta, one corner of the delta is tied to earth, fixing that phase at earth potential. That makes the voltage from the grounded phase to ground equal to zero. So the C phase, being the grounded corner, has 0 volts to ground. The line-to-line voltage stays 240 V, and the other phases to ground would each be 240 V, not 120 V.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy