I have a commercial garage that is being converted from a warehouse. It has an electrical panel in it that would be above the 18" classified level. Is this allowable according to 511.7 (B) Electrical Equipment Installed Above Class I Locations? It, of course, is not listed I/II. Also, I assume the feeder that comes up to it from under slab would have to be changed to metal down 2' below grade and use threaded fittings - correct? Do they make class I/div II panels?