Number of VFD motor circuits in a pipe?

I have a question for the hive mind, how any VFD motor circuits in can you run in a conduit, I have 4 circuits to run and was thinking of running 2 circuits per pipe (rgs) regular THHN, or can I possibly run all four in one pipe?

Edit Thank you in advance
 
Take a look at the manufacturer's instructions. Many do not recommend more than one VFD output circuit in a raceway.
 
Top