Abstract: An apparatus and process for the anodic or cathodic electrocoating of hollow bodies, in particular of cans, such as beverage cans, by means of a water-soluble lacquer as an electrolyte liquid, which is in contact with the cathode or anode and is sprayed in at least one uninterrupted stream which produces a conductive connection, onto the surfaces of the hollow body which forms the anode or cathode.