9 EQUIPMENT ACCESSORIES AND COMPONENT PARTS FOR HOLDING IN PLACE AND CONNECTING ELECTRIC CONDUCTORS-NAMELY, WIRING AIDS CONSISTING OF GUIDE WIRES, WIRING LYRES, CHANNEL CONDUCTORS, FERRULES, WALL PLUGS, FUSE-HOLDERS, TERMINAL JUNCTIONS, TERMINALS, COUPLES, JUNCTION BLOCKS; MECHANICAL ACCESSORIES FOR CONNECTING AND FIXING ELECTRIC EQUIPMENT ON A SUPPORT STAND-NAMELY, SECTIONAL IRONS, MOUNTING PLATES FOR CARDS OF IMPRINTED CIRCUITS, RACKS, TIGHTENING CLAMPS; CLOSETS, SMALL CHESTS, ELECTRIC FUSE BOXES AND PERFORATED AND NONPERFORATED METAL PLATES