1,Ribbon cable with heating plastic layer 2,Polyolefin insulation layer 3,Long working life 4,Voltage:12V.24V.36V. ... .room temperature −30°C,the value is 35.0mm.6,Insulation resistance:when the length of heating cable is 100m,ambient ... by 2500V DC tramegger 1 minute, the minimum value of insulation resistance is 1200MΩ.Working voltage:12V 24V 36V 110V 220V ...