ricardocello
Watching and Learning
While house is powered from grid, IF the autotransformer is in parallel (L1, L2, N) to the grid, then the other subpanels will also be balanced by the AT.If you mean while connected to the grid, yes. There are other subpanels on the property.
If you’ve wired it so this cannot happen, then everything is fine.
sounds goodIf you mean while the grid is down, no. Even though I am using my main panel as critical loads panel, no other panels or loads will be fed by the AT while on backup.
If L1 L2 from the AT is not connected while grid is up, everything is fine.Note that I won't be using the AT to power any loads while the grid is up.
or even if just the AT neutral is disconnected, that works too.