Is there a labor unit to use for demolition, Need to remove old switch gear, And Just as a starter 200 feet of SQ D 800 amp aluminum feeder duct, And 200 feet of 2.5 inch ridged conduit with 3-3/O? Most of this is easy to get to exposed in a hallway. Only about 45 feet is above a dropped ceiling. It does go through 6 walls. The model number on the feeder Duct is AF-508-LF I have looked for information on line to see how it goes together but have not found any. Thanks