Hi I am taking generals now but I will eventually take EE degree. I am studying electrical systems now. Can somebody help me on system configuration regarding circuit breakers clearing ground faults? In this picture (the bottom figure), if X2 faults at the transformer, would the fault current ever trip the breaker? I know that it should but I just don't see how. The fault by X2 in the picture will travel through a bonding jumper (the short green horizontal piece between the transformer and the disconnect panel), then to the disconnect, then eventually to the X0 of the transformer. The current will cycle like that but will not travel through the breaker. From reading the web page where this picture came from, I know the bonding jumper will make the breaker trip when the X2 faults at the transformer. But I just don't see how. Any help is appreciated.