I'll have to look at a Generac in the field. On what you say, you are faced with contradictory data within the enclosure. My first opinion would be to check the mfg install books, or call Generac. I guess that EC was running SER cable?
Thinking harder the wording of the label "connections within" could be referencing the factory wiring within the switch, not the field connections.
Sparky may want to think about crimping a Cu tail on the Al & call it done. What do you think??
