LT3 Flashcards
1
Q
Megohmmeter are used to measure what
A
insulation resistance of motors, transformers, cables, circuit wiring
2
Q
common causes of insulation break down is
A
mechanical damage, fault currents, excessive heat, oil, moisture , voltage stresses
3
Q
meggers provide a test voltage of
A
250-5000VDC
4
Q
meggers can read ____ because of the high voltage they produce
A
Megohms
5
Q
can you use a megger on an energized circuit
A
no
6
Q
what should you do to a conductor before and after the test to discharge any potential shock hazard
A
Ground It
