> All of the Seasonic power supplies that go beyond 1kW or so will trip my shitty (i.e. probably defective) Siemens AFCI breakers.
In my experience, the Siemens AFCI just do that. I recommend switching them out for Eaton AFCI. That fixed all my nuisance tripping, especially from induction in other lines
I didn't realize Eaton had AFCI breakers listed for use with Siemens panels (or that they work better). I swapped it out for a non-AFCI Siemens, but if I can make it code compliant I'd much rather that.
In my experience, the Siemens AFCI just do that. I recommend switching them out for Eaton AFCI. That fixed all my nuisance tripping, especially from induction in other lines