The following detached garage sub-panel wiring diagram shows multiple important electrical types of equipment, like Service Equipment that has a supplemental grounding electrode, Utility Meter, Utility Transformer (Secondary is 120.240 Single Phase 3), and these are connected to Hot Leg A, Hot Leg B, and a Neutral Equipment Ground to the sub-panels of the system. As mentioned in the wiring diagram here, disconnecting the neutral equipment ground wire means the current is required at the nearest point of entrance of the feeder. Another important point that needs to be considered here is that the bond equipment grounding bar is connected to the metal enclosure.
