... 450/750v . production according to IEC or GB standard . BV : Copper core , PVC insulated , without sheath power line .BLV: Al core ... , PVC insulated , without sheath power line . BVR: Copper core , PVC insulated , flexible power line . 227 IEC 01 (BV ... 90°C, single core solid conductor without sheath power line . ii ) : BV-90 model not more than 90°C,other not ...