High-voltage cables are specialized electrical cables designed to transmit electricity at high voltages, typically above 1,000 volts. They are essential for transporting power over long distances, connecting power plants to substations and ultimately to homes and businesses. These cables are built to withstand extreme conditions and are often insulated to prevent electrical leaks and ensure safety. These cables come in various types, including AC (alternating current) and DC (direct current) cables, each serving different applications. High-voltage cables are usually made from materials like copper or aluminum for conductivity, and they are often encased in protective layers to guard against environmental factors and physical damage.