Abstract: An automated cathodic electrodeposition line has a barrel carriage assembly that is electrically energized only when in contact with a treatment tank or an overhead programmed hoist. A parts transfer shuttle moves phosphated parts from one treatment barrel to another barrel and between separate sections of the coating line to reduce cross contamination. An automatic parts loader rotates a bin filled with parts into a parts discharge position for loading parts onto a vibrating tray that in turn moves parts into a treatment barrel. Cathodically coated parts are cured by infra-red parts in a curing oven.