I haven't even been up to see EXACTLY what she's dealing with, but I do recall some mention of alot of the machines working on the 240 with step up xfrmrs, so some will work just fine with the 480. She also stated that she has purchased a new distribution panel, so that's promising. In South MS, you would not believe the caliber of electrical services. I wired up a trailer house for one of this lady's employees after Katrina and most of the local electrical supply houses did not know that you should bury conduit 36" when running from the main on the pole to the trailer. They believe kicking some dirt over it will suffice. I've only agreed to offer some advice on the work her electrician will be doing, but I believe him to be cut from the same rural cloth as the shade tree electricians at the supply house. I'm very careful to reference NEC when providing consulting work to family/friends. I work for a major utility and safety is a serious part of my livelyhood. I appreciate all of your input and kudos to a great forum for information. I've learned a lot from simply browsing through these posts and many of the safety-related stories reiterate some things that I have witnessed, like a complacent 20 yr veteran by-passing a voltage check in a disconnect before tightening an allen screw.