Read again what I said about the assumption that the neutral and the safety ground are always at or very near the same potential. The contents of that box was designed with that assumption.
If you break the neutral connection and then apply -220 V to it (assuming relative to earth ground), then how is the power that is coming in on the hot wire going to make it back to the transformer?
Sketching out how you are talking about hooking up these boxes to power would sure help the discussion a lot!
If you break the neutral connection and then apply -220 V to it (assuming relative to earth ground), then how is the power that is coming in on the hot wire going to make it back to the transformer?
Sketching out how you are talking about hooking up these boxes to power would sure help the discussion a lot!