Abstract: An adapter closure structure for electrical conduit systems of the type having conduit bodies, for which additional conduit access to an in-service conduit junction box can be provided without the need for removing and/or rewiring the in-service junction box. In a first embodiment, a structure is provided in the form of a closure plate having one or more conduit hubs to replace a flat closure plate on one side of a conduit body. In a second embodiment, a second conduit body may be joined to the in-service body utilizing a novel coupling ring. In this alternative embodiment, the second body can provide additional interior working space. In addition the second body may also optionally add one or several additional conduit hubs for added access to the in-service system. In both embodiments, the closure structure is fitted into a female opening of the conduit body for structural integrity.

Abstract: A conduit junction box replacement cover for electrical conduit junction boxes. The replacement cover can replace a conventionally designed cover on a conduit junction box that contains corroded or otherwise damaged threaded holes rendering the installation of a conventionally designed junction box cover difficult or costly. The removable replacement cover has a flat inside surface and a rim that overlaps the outer walls of the body of the junction box. The removable replacement cover can be installed by inserting set screws through the rim to make secure contact with the body of the junction box. A flat gasket on the inside surface of the replacement cover and positioned within the rim seals the junction box from adverse environmental conditions. The rim of the replacement cover can contain several cut-outs to permit the installation of the replacement cover on conduit junction boxes that contain one or more external hubs.