The plant has a 400-hp motor that drives a big compressor for the plant air system. A few months ago, it was tripping its feeder overcurrent protection device (OCPD) on a regular basis. The plant engineer suspected a problem with the motor windings, so he brought in a thermographer to check things out.
Electrical Troubleshooting Quiz - April 4, 2017
Knowing the failure mode of a faulty cable makes it much easier to determine the cause.