since you are talking about high amperage to go that far, I would suggest going to diychatroom (DIY Chatroom - DIY Home Improvement Forum) actuall licenced electricians visit that forum and anwer questions like this. i got help with wiring RV outlet and a planer that was a 3 phase conversion to single phase. good luck!
There is no need to go anywhere else. In the 100,000 plus members of this forum, there are as many "actual licensed electricians", engineers, builders, and contractors, as you will find anywhere.