There are also different grades of breakers depending on the manufacturer of your panel.Per NEC only the panel manufacture breakers can be used in the panel. Breakers Listed for use in the panel are listed on a label found inside the panel. Usually on one side or the other
If you're supplying the parts then do some research on breakers as well. +3 for 10/3 romex.
+3 for 10/3 romex.What do you do with the bare #10 ground wire in the Romex cable?