Don’t worry about asking questions. The Protran series is switches are great for what they do, I used one for years with a genset, but that genset had a floating neutral. The Protran series doesn’t switch the neutral. It passes neutral back into the main panel to feed the loads. if the power source has a bond between its neutral and its ground you end up with two bonds, the one in the source, and the one in the main panel. this results in neutral current having two ways to travel (parallel paths) and it will take both. You end up with basically 50% of your Unbalanced current on the EGC which then energizes any metal cases or conduits it contacts. It is an accident waiting to happen