Ключевые слова: blue, cable, ceramic, communications, component, connection, construction, danger, electric, electrical, electricity, energies, engineering, equipment, frame, generator, high, industrial, industry, insulate, insulation, insulators, isolator, line, metal, outdoors, powers, row, sign, sky, station, steel, striped, structure, supply, tall, technology, up, voltage, volts, watts, wire,