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Old January 20th, 2011, 07:42 AM   #9
DickDV
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United States

DickDV is offline
 
Join Date: May 2002
Location: Kalamazoo MI
Posts: 2,319
How far in wire feet is the motor from the drive? Since this is a PF4, it's probably low hp which can be very susseptible to lead capacitance currents causing faulting.

And, follow OkiePC's advice on this exactly. Anything less than a 1000V megger is not going to help you. And use it to check phase-to-phase, not just phase-to-ground.
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