I am a new inspector, and I understand it is incorrect when you have 2 differant brand name electrical panels on the same house. But, what if you have 2 differant brand name panels if it is an adjoining building (i.e. a barn, or a shed)? Are differant brands “compatible” then?
Far as I know there is nothing wrong with different brands of panels even in the same house let alone an outbuilding. The only thing I know of is, installing different brand breakers than the panel brand itself…things like that.
Sorry I missed this one. It really does not matter in regards to the panels today as what you are dealing with is connections of “ungrounded”, “grounded” and “grounding” conductors and their proper termination.
All panels built today will configure to these conductors and be fine.