We will be getting in an EMCO 320. However, I only have single-phase and a bit confused as to the sizing of an RPC. The docs that I've seen says it need 10 kva, which is quite a lot.. The spindle motor says about a 5HP @ 50% duty cycle. American Rotary said I need a their AD20 model (10HP, ~7.5kw). Anyone out there running on an RPC who can tell me their experience? The specs I'm going off of are these:

https://image.slidesharecdn.com/6869...?cb=1432101738
https://image.slidesharecdn.com/6869...?cb=1432101738

Any help is appreciated!