With 14-2 you can only have a 15a breaker, doesn't matter if its UF
yep, i know. I noticed that the 14-2 is plugged into a receptical which is then wired to a 20amp breaker. I will be fixing this.
For 60a use #6 TWHN in conduit
What size conduit? How much air space should there be for the cable inside the conduit?
So if I understand you right, you are saying to buy the following:
50' #6 black
50' #6 red
50' #6 white
50' #6 green
Fit all into one conduit (again, what size is appropriate?), then feed conduit from circuit breaker to sub-panel.