Usually in my case often is 2 #4AWG in a raceway. There are a lot of crop drying fan motors installed around here that are single phase rated anywhere from 12-16 HP. Not listed in tables in 430. Based on nameplate current they need 4AWG minimum conductors.
I'm sure usually for you is at least 4 conductors in the raceway maybe even 5. I've run into those jobs also.