A ____-volt megger would be used to test the insulation on a transformer with a 480-volt rated winding.
A) 120
B) 240
C) 500
D) 1,000

Question

Quizplus · Accepted Answer

The megger voltage rating should be at least twice the rated voltage of the winding being tested. In this case, a 480-volt rated winding would require a megger with a voltage rating of at least 960 volts. The closest option is 500 volts, making it the best choice.

A ____-Volt Megger Would Be Used to Test the Insulation