300/500-450/750 V NYAF, Single Core Power Cable, Copper Conductor, PVC Insulated, Unsheathed AREA OF USE: They are used in connection of mobile devices, in closed, dry places, distribution boards, in pipes under and over plaster. Highest continuous operating temperature under normal conditions: 70 oC Standard: TS EN 50525-2-31 Cables - Cables with Rated Voltage up to 450/750V