Kobe NYA cable typically used for domestic installations and power systems. In domestic installations to use the size of 1.5 mm2 and 2.5 mm2. Single-core, PVC-coated insulation materials, and often for the installation of aerial cable. No insulation color coded red, yellow, blue and black. Electric wires commonly used in this type of housing because the price is relatively cheap. The insulation layer only one layer so easily deformed, not waterproof and easily bitten by rats.
To be safe wearing this type of cable, the cable should be installed in the pipe / conduit of PVC or closed channels. So it is not easy to be the target of rat bites, and if there is insulation that peeled off are not touched directly by the people.