This junction box must be supported in accordance with one or more of the provisions in 314.23(A) through (H). In accordance with 314.23(E), an enclosure not exceeding 100 in.3 that contains only splicing devices, does not support a luminaire(s), lampholder, or other equipment, and is supported by entering raceways, shall have threaded entries or have hubs identified for the purpose. In addition, the box shall be supported by two or more conduits threaded wrench-tight into the enclosure or hubs. Each conduit shall be secured within 3 ft of the enclosure or within 18 in. of the enclosure if all conduit entries are on the same side. The exception in 314.23(E) permits a conduit body to be supported by intermediate metal conduit, rigid metal conduit, rigid polyvinyl chloride conduit, reinforced thermosetting resin conduit, or electrical metallic tubing. Since the 4-in.-square box is not a conduit body, the exception is not applicable in this application. EMT and FMC are simply not permitted as a supporting means for junction boxes.