What's the difference between the sheath line and the wire?
The wire without sheath is pure conductor metal, without insulation and sheath, such as steel core, aluminum conductor, copper aluminum bus, electric locomotive line, etc.. Mainly used in suburbs, rural areas, the user line, switches and so on.
The line is sheathed outside the conductor extrusion (around) insulation layer, such as overhead insulated cables, or a few cores (corresponding to the power system phase, the zero line and the ground), such as more than two core overhead insulated cables, or increases the jacket layer, such as plastic / rubber sheathed cable. Mainly used in the hair, distribution, transmission, change, power supply lines in the strong electricity transmission, through the current (tens of thousands to thousands of security), high voltage (220V to 500kV and above).
The sheath wire is actually one of the wires. Wires and cables are usually called wires. It's just called the thin wire, and the other one is called the cable. Mainly includes terminals, electromagnetic wire and electrical insulation wire, power cable, communication cable and optical cable.
