Ключевые слова: blue, cable, column, concepts, connection, danger, electricity, energy, equipment, facility, factory, generation, high, high voltage, ideas, industry, insulate, insulated, insulation, insulators, isolator, large, line, main, mesh, objects, objectsequipment, power, protection, pylon, riot, river, sky, station, steel, step down, step up, sub station, substation, supply, three, touching, tower, transformer, up, voltage, volts, watts, wire,