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The bonding of the electrical panel would have to be moved into a separate fused disconnect after the meter in this case. Then you can switch either neutral through the ATS and only one bonding is connected at any time. Just as the diagrams explain it. if the local code requires a bonding of...

that’s correct if you use 2 pole ATS You can use a isolation transformer or a 3 pole ATS and switch N on the 3rd pole Then you can leave the Genset bond intact and be happy

thank you Guy, as for any interested member: the governing rule is: NEC 250.30 Grounding Separately Derived Alternating-Current Systems For any MEP and AMMPS use the 4 pole ATS Connection! For single phase 240/120VAC System use a 3 Pole ATS and switch N on the 3rd pole! your Generator...

The Generator is not a sub panel. It's a Generator. If you separate the bond in the Generator, then you open up a can of worms, as we have seen in this case. These particular MEP Generators were specifically designed to have this bond. Removing this bond creates a unsafe and unstable condition...

correct, but some folks like to remove them see post #28 https://www.steelsoldiers.com/threads/neutral-bonding-at-the-generator.77291/page-2

And, if in doubt, contact the expert first

The common issue on those generators is the connection between chassis and Terminal L0 which is usually tied in with PE and N on the other end. This creates two poles in the generator between chassis and Terminal L0 Any stray voltage originating from the utility side will feed back into any...

Btw. our systems are designed to always start, rather then not start. These are Military Devices

We recommend twisted pair shielded wire for switch if not run in conduit. The Autostart wires should also be run separately from power wires.