Pulling 6-6-6 w/ ground in 1-1/4" conduit

[grsthegreat]

They make compression wire reducers for landing large wires in smaller breakers.

 

[3Ts]

Don't quite know what you mean. Sure, you could put a single breaker into an enclosure and have lugs, but more often it's going into an existing panel.

Not sure of the proper name, but these are what I was referring to. They also come in a style with prongs instead of the hole in the tab shown here.

 

[grsthegreat]

That’s a grounding chair style lug. The ones with the prongs land on the neutral or grounding lugs to make them accept larger wires.