Abstract: A system applying a coating material to surfaces situated adjacent to or on live, high voltage electrical bus work or the like utilizes a liquified coating material stored in containers and is electrically isolated from potential ground sources by a dielectric barrier. A pump means draws the coating material from the containers and transports the coating material through a conduit formed of a dielectrical material to a moveable cart supporting an applicator boom thereon which applies the coating material to the surfaces. The pump means is driven by compressed air which provides the pumps with a nonconductive fluid drive source eliminating an electrical potential or a potential ground source in the system.