EASTFIRE electrical heating cable to warm temperature of the heating cable core line configuration: core wire having a positive temperature coefficient of resistance of the metal alloy wire composed of linear rated power 18w / m. 2 Insulation: EASTFIRE heat insulation heating cable with double insulation structure, the insulating layer directly affects the quality of life of the heating cable, heating cable insulation temperature EST through trial and error, at 140 ℃ high temperatures, high temperature resistant layer deformation, not shrinking. 3 GND: ground wire from the 8 diameter of 0.4mm tinned copper lines. 8 tinned copper wire area of ??1.0048m square meters, in line with the provisions of the International Electrotechnical Commission IEC800 line shall not be less than 1m square grounding requirements. Metal shield 4: In the process of using the heating cable, since the current role of the heating cable will be formed around the electromagnetic field, and if more than 100 micro Tesla fields will be on human health and other electrical impact. Through the effective protection of the metal shield, the electromagnetic field within the core control line, so they can not spread out, and then by the electromagnetic field into the earth ground wire to make the heating cable and the earth formation potential. Through testing, EASTFIRE electric floor heating value of the electric field intensity of labor is within the scope of national security, 1/1000 (state of the electric field strength is 4000 V / m, measured data EASTFIRE heating cable is 4 volts / m); magnetic induction the highest value was 13%, the lowest 6% (state of the magnetic induction intensity is 100 Witte Tesla, EASTFIRE electricity to warm up to 13 measured data Witt Tesla, Tesla minimum 6 Witt). Far below the national standard, higher than the national safety regulations, harmless, can be assured. 5 Outer sheath PVC outer sheath for high-quality material. PVC has good anti-corrosion, anti-acid, anti-aging effects, and 100% waterproof. Second, the high-temperature heating cable Model EAST-S/1R (single conductor heating cable) EAST-ZN/2R (dual conductor heating cable) S-layer insulation, single heating conductor structure ZN-flame resistant heat conductor structure single lead structure 1R-2R-double guide structure A-B-fire heat insulating layer of high temperature insulation layer