Control wiring that failed to stop motors?

[Dale001289]

Does anyone know of a case where motor control wiring did not stop a motor when the wiring failed? I know this sounds weird, the only thing I can think of was when an interlock failed and the motor kept running.

 

[Eddie702]

Anything is possible. This would happen with old 240-volt control circuits where one of the 240 legs would go to ground and the 120v could not pull the coil of the starter in but would hold it in

 

[don_resqcapt19]

There are case of long 3 wire type control circuits where the stop button does not cause the starter coil to drop out because of the control wire shunt capacitance. Square D has a document on this.