That’s a hack to make a generator designed to be used as a job site generator with ground fault protection work to backfeed a house panel. Neutral and ground can only be bonded at one spot.
This is not a separately derived system issue, this is a portable generator being hooked up in a single-family dwelling. In a single-family dwelling when you start separating your grounded from your grounding u are Temting fate for some very serious hazards.
Let’s be clear, I am not, and I have never heard anyone advocating having ZERO neutral-ground bonds in a residential system. So now that we agree on that...
You can install a generator with a neutral-chassis/ground bond, or you can install one that is unbonded and relies on the bond at the main panel. My understanding is there are exactly zero code compliant installations that have both.
I was under the impression that for some reason code MANDATES that standby generators are installed as separately derived systems, and that installed it with a 3 pole transfer switch, non SDS was not to code.
Clearly I am wrong. What I am hearing is that you often install 3 pole transfer switches, non SDS, with a generator that does not have a chassis/ground-neutral bond.
Am I missing anything else?
To safely emulate your tried and true methods, it sounds like I would want to not have the neutral/ground bond on the generator, not connect the house ground to the generator ground, and DO ground the generator chassis with a good grounding rod.
Or is literally the only difference just making sure that the neutral isn’t bonded to the generator chassis, but you still connect the ground from the receptacle to the chassis? Grounding rod is just extra protection at that point?