Is it typical for 1 of the (pipe) lines from my outdoor AC unit to have condensation? The AC tech added 1Ib of freon yesterday. Don't know if this has anything to do with the condensation.
It is normal for the suction line /vapor line ( going to the outside compressor) to have condensation. The amount depends on humidity and the characteristics of your unit. If you get frost on it , have someone check it out.
If it's warm weather the small should be warm.
The large should have condensation. Beer can cold is the old rule of thumb for how it should feel.