I am receiving conflicting opinions regarding if additional protection is needed on the motor below. These have EGCs that run with the circuit conductors from the MCCs. A QAQC is saying that NEC requirements are not met and that the motor frames are likely isolated from that steel plate due to the paint. One engineer is saying that the EGC is the only requirement, and that the motors are bonded through the bolts. Another engineer agrees with the QA saying that specific grounding bolts would need to be used.
These motors are on modules which have a bus bars that ties into the plant's ground system.
I am trying to understand this issue better. Is the frame of a motor protected via the EGC?
These motors are on modules which have a bus bars that ties into the plant's ground system.
I am trying to understand this issue better. Is the frame of a motor protected via the EGC?