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 technology is widely used in fire protection, petroleum, chemical industry, steel, and power sectors 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, which acts as a resistance heating element converting electrical energy into heat. The PTC material's resistance increases with temperature, limiting current flow at approximately 65°C, thereby preventing overheating and enabling automatic temperature regulation. This self-limiting heating cable provides uniform temperature distribution, prevents overheating, saves energy, and offers rapid heating response. Can be cut to desired length within 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 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, safe and reliable operation 2. Energy efficient 3. Rapid temperature rise 4. Low installation and operational costs 5. Easy to install and maintain 6. Compatible with automated control systems 7. Environmentally friendly 8. Simple installation—connect cold wire directly to 12V power supply 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 prior to ordering. Common applications include freeze protection for water pipes, solar water heater lines, oil pipelines, downspouts, tank heating, water line anti-freeze, roof and road snow melting, and other industrial or residential heating needs. Important notice: This 12V heating cable must only be connected to a 12V power supply to avoid damage. Installation instructions: Wrap the heating cable around the pipe or lay it straight along the surface. Secure the cable every 30–60 cm using thermal tape or aluminum tape. Recommended: Apply a layer of rubber insulation over the pipe before installing the heating cable to improve 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 adhesive tape Rubber and plastic insulation layer FAQ: Q: What is self-regulating heating and why choose it? A: Self-regulating heating cables automatically adjust heat output based on ambient temperature, avoiding excessive or insufficient heating. Offers advantages such as explosion-proof design, all-weather performance, high reliability, and long service life. Ideal for challenging applications like long pipeline tracing or heating in confined spaces. While initial cost may be higher than alternative solutions, it provides the most economical and efficient performance over extended use.