Ends are sealed for insulation and protection. Not for thermal or non-thermal effect. Have you ever seen someone cut a section of heat tape to test it? The end of the heating tape is not sealed and still generates heat. This is for testing performed by professionals. You should not follow suit. It's dangerous. I only told you to seal the ends via instructions. This has no direct relation to whether the heating tape generates heat or not.
It is strongly recommended that the head be sealed, waterproof and insulated to prevent short circuits and leaks.
The electric heating tape is made of conductive polymer, two parallel metal wires and an insulating sheath. Its characteristic is that the conductive polymer has a high positive temperature coefficient and is connected in parallel. It can automatically adjust the output power to mesure the temperature of the heated system changes, automatically limit the heating temperature and can be arbitrarily shortened or extended within 15 minutes. certain range and allows multiple overlaps without high temperature hot spots or burnout. \x0d\The installation method of the solar electric heating tape is as follows:\x0d\\x0d\1. The rear end of the solar heating tape is cut at an obtuse angle at 45 degrees, and the rear end must be waterproofed and insulated. with a heat shrink tube. \x0d\2. Cut the heating cable power terminals unevenly. The connection between the heating tape and the power cord should be firm. The two terminals should be fixed with copper sleeves and then put into heat shrink tubes for waterproof insulation treatment. , then use heat shrink tubing. Carry out secondary insulation and waterproofing treatment fromthe outer insulation of the heating belt to the two-conductor power cord to prevent water from seeping into the heating element of the heating belt and causing the heating belt to catch fire. . \x0d\3. When solar electric heating cables are installed near flammable materials such as rural markets or wooden ridges, the pipelines should be treated with fire-retardant layers or routed through exterior walls away from flammable materials. or Fireproof pipes and other non-combustible items must be insulated if it is found that fire prevention treatment is not carried out properly. \x0d\4. Since the current of the electrical tape is too large when power is turned on, please pay attention when selecting the power cord: When the length of the electrical tape does not exceed 5 meters, choose the national standard 0.5. AC cordmm2 power supply and choose electrical tape when the length is more than 5 meters. The national standard 0.75mm2 power cord, the national standard 1.0mm2 power cord should be used when the length of the heating belt is more than 15 meters, the national standard. 1.5mm2 power cord should be used when the length of heating belt is more than 50 meters, national standard 2.5 should be used when the length of heating belt is more than 100 meters of power cord 'food. \x0d\5. When installing the special heating tape for solar water heaters, the heat shrink wrap provided by Huaning Company should be used for standardized installation. Since semi-heating tape cannot withstand excessive tension, special PEX. Solar pipe expands and lengthens when heated. When attaching the tape semi-tropical on the PEX pipe, do not use tape, aluminum foil, etc., use cable ties to secure it. 50cm\x0d\7. The power supply of the semi-tropical tape cannot be connected to the water level meter and must use a leakage protection switch. Avoid excessive bending and bending during installation. \x0d\8. When the electric heating tape is reused every year, the aging and insulation conditions of the rear end and connecting wire should be checked, and if any problems are found, replace them in time. \x0d\9. The lifespan of the solar electric heating tape is 3-5 years and needs to be replaced if it exceeds the time limit.