If you do some research, you will find there are many factors that determine the ampacity of a conductor. Most importantly is the insulation of the wire. THHN and THWN and very common. In conduit, load conductors in a a conduit, free air, ambient temp, insulation, conductor composition, all of that plays in so there really is no "one size fits all" load chart.
One thing you should confirm is some wires are rates at 75 and 90C. Many will simply figure the 90C ampacity is fine but if you configure for that running temp, you have to make sure all other gear is also rated for 90C like breakers, switches, contactors, etc. Take a look at the wire you plan to use, get the numbers off the insulator and go from there.