220V single phase to 380V three phase

[JohnHaine]

Hard to say if it would stall at the lower speed, that's more a function of torque than power. Just change the pulley ratio surely? But you can vary the speed with the VFD of course.

Ideally you need 3 core screened cable. The current won't be particular high so anything rated at 5A per core would be fine I'd guess. There is debate about how to connect the screen but for RF the screen should be firmly grounded to the E terminal of the VFD at one end and to the motor casing at the other. If you can't get 3 core screened then electrical suppliers sell 4 core cable for 3 phase one of the cores being for a ground.