ELECTRICAL-WIRING FIXTURES-NAMELY, BUSHINGS, SUPPORTING-CLIPS, SUPPORTING-STRAPS, GROUND-COUPLINGS, FLAT ELBOWS, FLAT T'S, CROSSES, INTERNAL ELBOWS, EXTERNAL ELBOWS, CORNER-BOXES, FIXTURE-ROSETTES, RECEPTACLEBASES, BLANK COVERS, OUTLET-BOXES, FIXTURE BOXES, CANOPY-RINGS, SWITCH-ADAPTER PLATES PUSH-SWITCH COVERS, CONDUIT-COUPLINGS, AND ELBOW CONDUIT-COUPLINGS