I am reading a book on electrical practices and I've come across to a statement that says it is safe practice to ground the secondary winding of a transformer.
In general, why does grounding one terminal of a secondary winding not cause a ground fault? If, for example we hook up a load to the secondary winding side, what prevents the current from going to the path of least resistance which is the grounded point of the secondary, and ignore the high resistance load?
Especially since here in our ship, our generators wye neutral is connected to our ship's hull, and grounding the secondary winding means connecting it to the ship's hull. Why doesn't this cause a ground fault?
Edit: Addded photo.
Edit 2: I apologize for the over simplification of the drawing, let me stress that the diagram is only for the sake of simplicity and that we have the necessary circuit protection in between the generators, switchboard, transformers, and load. The ground fault current is also limited by the NER in this case, which in the drawing there is a mistake wherein if you interpret the grounding on the secondary winding it would immediately make electrical contact to the ships hull.