In the electrical and electrical industry, the usage rate of PVC conduits is still quite high, especially within cabinets like distribution and control cabinets. For electricians, the use of these conduits makes wiring more convenient and facilitates future circuit maintenance and troubleshooting. Many customers pay close attention to the flame-retardant properties and lifespan of the products. So, how much temperature can the flame-retardant PVC conduits in the distribution cabinets withstand, and for how long can they be used?
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Generally, it can be used for 15-20 years. The flame-retardant PVC line channels inside the stable and reliable distribution box are made from high-toughness rigid PVC material. The use of new raw materials ensures a long service life, complies with ROSH certification, has flame-retardant and low-smoke properties, withstands temperatures from -40℃ to +85℃, and features a VO fire rating, extinguishing upon contact with fire, and offers excellent flame-retardant insulation effects.
In addition, the quality of the product and its longevity are also somewhat related. Therefore, when selecting PVC conduits, pay attention to the following points.
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Brand new genuine material, with a smooth surface. Products made from mixed material have a rough texture, whereas those made with genuine material offer a smooth finish, more accurate color, and are in compliance with the standard silver gray.
2. High flexibility and resistance to breakage. Products made from high-quality PVC material exhibit excellent tensile resilience, allowing for bending without the risk of breaking. Conversely, line channels made from low-quality mixed materials tend to be brittle, easily snapping and reducing their lifespan.
3. Thicker Material for Channels and Covers. The design with thicker channels and covers offers good load-bearing capacity. For example, larger-sized cable channels often have more wires inside. Without thickening the material, the wires may fall out after installation, affecting the overall performance. Therefore, this detail should also be taken into account when making a selection.
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The lifespan of PVC flame-retardant conduit within electrical cabinets depends not only on product quality but also on proper care during daily use. The flame-retardant and insulated properties of the PVC conduit ensure safe operation.


