BT PVC Phone Line Wire with Copper Coated Steel Conductors is ideal for wiring telephones, low current and low voltage applications in Domestic and Commercial enviroments. Commonly used as a Telephone Extension Cable. A quality, well constructed product which is easily stripped and worked with. 0.5mm² copper conductor size, External diameter 5.0mm (Should be used with 5mm Round White Clips) 6 Core cable (3 Pair) with Industry standard colour coding - Orange, Orange/White, Blue, Blue/White, Green & Green/White coloured cores as indicators Plain annealed high quality stranded copper conductor both Insulated and Sheathed with PVC. Suitable for extra low (such as CCTV Supply) and low voltages up to a maximum of 80v Suitable for temperatures between 0°C and +70°C General purpose PVC telephone cable suitable for use in internal Telephone Systems and other communication equipment. This cable offers an extremely cost effective signal cable for fixed installation