A single core is a conductor in an insulating layer. When the voltage exceeds 35kV, most of the single core cable, the relationship between its core and metal shielding layer, can be regarded as the relationship between the primary winding coil and the iron core of a transformer. When the single core cable core through the current will have the magnetic field lines of the chain of aluminum or metal shielding layer, so that the two ends of the induction voltage.
Single-core refers to a conductor in an insulating layer (generally it is mica tape) only, such as the use of a single phase lighting lines need two and road laying.
Insulation: BETAflam mineral copolymer
Core identification: Identification PET tape, Red, Black or Green-Yellow