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. Suitable for various heating applications including freeze protection and heat tracing. Easy and convenient to install. The cable will not overheat; average temperature range is 30~50°C. Self-regulating heating cable is widely used in fire protection, petroleum, chemical industry, steel, power generation, and other industries for pipe and tank heating, frost protection, roof and gutter snow melting. Features a uniform core strip of PTC material between two parallel metal busbars. When connected to a power source, current flows laterally through the PTC layer, generating heat. The PTC material acts as a resistance heating element, converting electrical energy into thermal energy. As temperature increases, the resistance rises, limiting current flow and preventing overheating. Automatically regulates temperature without external controls. Benefits include uniform heating, energy efficiency, rapid warm-up, and the ability to cut to desired length within maximum limits. Can 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 options available) 2. Temperature range: Maximum working temperature 65°C; Maximum exposure temperature 85°C; Maximum enduring temperature 105°C 3. Minimum installation temperature: -40°C 4. Start-up current (at 10°C): ≤1.6A/m 5. Cold wire length: 0.4 meter 6. Power output: 15W/m Advantages: 1. Uniform temperature distribution, safe and reliable operation 2. Energy efficient 3. Rapid temperature rise 4. Low installation and operating costs 5. Simple to install and maintain 6. Compatible with automated control systems 7. Environmentally friendly – no emissions 8. Easy 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 If required length is not listed, please contact for customization options Applications: Pipe and tank freeze protection for water pipes, solar water heater lines, oil pipelines, downspouts Roof and gutter de-icing Tank heating Water line anti-freeze Road surface snow melting Other industrial and residential heating uses Important notice: This 12V heating cable must only be connected to a 12V power supply. Use with higher voltage will cause damage. Installation guidelines: 1. Wrap the heating cable around the pipe or lay it straight along the pipe surface. Secure every 30–60 cm using thermal tape or aluminum tape. 2. Recommended to apply a layer of rubber insulation over the pipe to improve heating efficiency, reduce energy consumption, and protect the cable. Optional accessories (sold separately): Heat shrink tube Insulation tape High-temperature glass fiber tape Thermal conductive aluminum tape Rubber and plastic insulation layer FAQ: Q: What is self-regulating heating? Is it the best choice? A: Self-regulating heating cables automatically adjust heat output based on ambient temperature, preventing overheating or underheating. Offers advantages such as explosion-proof design, all-weather reliability, high durability, and long service life. Ideal for challenging applications like long pipeline tracing and confined space heating. While initial cost may be higher than some alternatives, it provides the most economical solution over extended operation due to energy savings and minimal maintenance.