Cold wire connected 12V can use 15 meters self-regulating heating cable PE insulation low voltage PTC heater. New upgraded product, the maximum circuit length can be 15 meters. The DWK12-J730 self-regulating heating cable operates at low voltage 12V and can be powered by car or truck battery for installation in vehicles for various heating applications including freeze protection and heat tracing. It is convenient and easy to install. The cable will not overheat; average temperature range is 30~50C. Self-regulating heating cables are widely used in fire protection, petroleum, chemical industry, steel, electric power, and other industries for pipe and tank heating, frost protection, and roof and gutter snow melting. A uniform core strip of PTC material is located between two parallel metal busbars. When one end of the cable is connected to a power source, current flows laterally from one busbar through the PTC material layer to the other busbar. The PTC layer acts as a resistive heating element continuously connected in parallel between the busbars, converting electrical energy into heat. The resistance of the core strip increases with temperature. At approximately 65C, the resistance becomes so high that it nearly blocks the current, causing the temperature to reach its upper limit and automatically stabilize. This self-limiting feature ensures uniform temperature, prevents overheating, saves energy, and allows rapid heating. The cable can be cut to desired lengths within the maximum allowable length and may be overlapped or crossed during installation. Cable structure: 1. Copper-core wire: 7 x 0.30mm 2. Conductive heating element 3. Polyolefin outer jacket Specifications: 1. Standard color: black (custom available) 2. Temperature range: Maximum working temperature 60C; Maximum exposure temperature 85C; Maximum enduring temperature 105C 3. Minimum installation temperature: -40C 4. Start-up current (at 10C): 1.6A/m 5. Cold wire length: 0.4 meter 6. Power output: 15W/m Advantages: 1. Uniform temperature, safe and reliable operation 2. Energy efficient 3. Rapid temperature rise 4. Low installation and operating costs 5. Easy to install and maintain 6. Suitable for automated control systems 7. Environmentally friendly 8. Simple installation connect cold wire directly to 12V power supply Quality guarantee: 2 years Package includes: 1 x 12V self-regulating heating cable (length optional) with 0.4m cold lead wire For custom lengths not listed, please contact seller Applications: Ideal for freeze protection of pipes and tanks such as water pipes, solar water heater lines, oil pipelines, and downspouts. Also suitable for roof and gutter de-icing, tank heating, water line anti-freeze, road snow melting, and other industrial heating uses. Important notice: This 12V heating cable must only be connected to a 12V power supply. Use with higher voltages will cause damage. Installation guidelines: 1. Wrap the heating cable around the pipe or lay it straight along the pipe surface. Secure the entire length every 3060 cm using thermal tape or aluminum tape. 2. It is recommended to apply a layer of rubber insulation over the pipe before installing the cable to improve heating efficiency, reduce energy consumption, and protect the cable. Available accessories (sold separately): Heat shrink tube Insulation tape High-temperature glass fiber tape Thermal conductive aluminum adhesive tape Rubber and plastic insulation layer FAQ: Q: Is self-regulating heating the best choice? A: Compared to other heating methods, self-regulating heating cables provide automatic temperature control, avoiding excessive or insufficient heating. They offer explosion-proof safety, all-weather performance, high reliability, and long service life. These cables effectively solve challenges such as long-distance pipeline tracing and heating in confined spaces. While the initial investment may be higher, self-regulating heating is among the most economical solutions for long-term operation.