Originally Posted by
malb
A giveaway is the fact that they strip the cable back some way and insulate with heatshrink to get small enough to cope with the cable entry. My concern is that any undue tension on the cable in the heatshrunk area could break a cable free from it's lug in the connector, leaving the motor running on two phases only, or heaven forbid unearthed.
Not this one. The cable goes right through the shell to the connections, all 4 wires are connected and the cable secured with a hinged clamp with 1 screw on each part.
At this stage I would remove the cable from the VFD, and do continuity checks from each cable at the VFD end to the contacts on the connector, there should be a 1:1 correlation between wires and contacts. I wouldn't open the connector unless there is not a 1:1 correlation, indicating a fractured joint.