S Harris
Member
- Location
- Atwood, IL
During the annual motor ground test at the local stone quarry we ran across 2 motors that have a high resistance on the EGC, reading of 2.44 ohms. if we leave our test lead on the EGC and lift it from the frame of the motor the resistance reading go down to .25 ohms, but as soon as you touch the EGC to the frame it goes up to 2.44 ohms. Does any one have an idea why this is happening. We only have 2 motors that this is happening to, last year the readings were fine. Thank you.