ELECTRICAL CABLES AND WIRES, MATERIAL FOR ELECTRIC WIRES, CONNECTORS FOR ELECTRICAL CABLES AND WIRES; MOUNTING STRAPS AND CLAMPS OF METAL FOR ELECTRICAL CABLES AND WIRES; MOUNTING STRAPS AND CLAMPS OF PLASTIC FOR ELECTRICAL CABLES AND WIRES; FIBER OPTIC CABLES; MATCHING AND CONNECTING PARTS FOR ELECTRICAL WIRING AND ELECTRICAL LIGHT WIRES; TRANSPOSERS BETWEEN ELECTRICAL LIGHT WIRING AND ELECTRICAL WIRES; ELECTRICAL LIGHT WAVE WIRING