3 Amp Blue, Brown, Black, Grey & Earth H03V2V2-F Light Duty Flexible Circular Wire for Heating uses up to 300V and 90°C such as Central Heating, Boiler Houses, Hot Presses, Time Clocks and Wiring Centers. A quality, well constructed product which is easily stripped and worked with. 0.5mm² copper conductor size, External diameter 7.0mm (Should be used with 7mm Round White Clips) 5 Core cable with Blue, Brown, Black, Grey & Green/Yellow (Earth) coloured cores as indicators Plain annealed high quality stranded copper conductor with double insulated PVC protector sheath (oversheath of heat resistant PVC) Suitable for extra low (such as CCTV Supply) and low voltages up to a maximum of 300v Suitable for temperatures between -5°C and +90°C BASEC Approved and Certified to BS6500, CENELEC HD21.5, VDE 281 and BS EN 60228:2005 (previously BS6360) General purpose flexible PVC cable suitable for use in high temperature domestic, commercial, indoor and outdoor