A conduit is a plastic, corrugated electrical installation pipe, which is an invaluable element for the proper routing of cables and installation wires. Let's find out which conduit to choose for the cable?
What is a conduit?
Conduits may look inconspicuous, but they are of great importance in the case of various types of installations - electrical, telephone, water supply, sewage, fiber optic, etc. They are simply plastic tubes whose main task is to protect cables and wires against external factors, mechanical damage and fires. . For the conduit to actually provide 100% protection, it should be made of the highest quality materials, characterized by exceptional strength, long life and durability.
What attracts attention is their corrugated surface, thanks to which they can take various shapes. This allows them to be adapted to many different applications to protect the cables in the same effective way. Conduits have very universal uses. They can be easily placed in wall grooves before plastering or in the floor before screeding. There are no contraindications to using them to create a physical division (e.g. cables in telecommunication shafts).
Which conduit for the 3x2.5 cable?
High-density polyethylene (HDPE) is most often used for the production of protective pipes because it has exceptional parameters - impressive durability and a wide temperature range. However, it is equally important to skillfully fit the conduit to the conduit, selecting its diameter to the number of conduits in the pipes. In general, remember that the inner diameter of the protective pipe should be 1.5 times larger than the outer diameter of the power cable and 2 times larger than the outer diameter of the fiber optic cable. How does this apply to 3x2.5 wires? The first number "3" is the number of wires, "2.5" is the cross-section of the wires in mm2. This gives us the result (minimum pipe diameter in mm) - 13.5 mm. And such a conduit should also be matched to the cable - you can find ithere .
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Which conduit for the 3x1.5 cable?
When looking for a conduit for a different cable size, we should follow the same calculation method. As before, we have the number of wires equal to "3", but their cross-section is smaller, because "1.5". This means that a smaller conduit diameter is needed - 11 mm. This is the lowest value for this type of cover. The largest is as much as 48 mm (5x70). Regardless of what conduit we need, we can be sure that we will find it at the Onninen electrical wholesaler.
Ground conduit - which one to choose?
But it is not only the size that counts, because it is equally important to adjust the cover to the conditions in which it will be used, for example in the ground. It is for this purpose that conduits are often used. Before we buy the right product, we should pay attention to several important factors. First of all, the material is extremely important - it must, of course, be as durable as possible, protect against moisture and low temperatures (up to -40 degrees Celsius). As we mentioned earlier, polyethylene, which is most often used for the production of conduits, works perfectly here. Thickness is important - it should not be less than 2-3 mm. Let's also pay attention to the compression resistance class (it should range from 450 to 750 N).
Conduit for photovoltaics - what should it be like?
Photovoltaic installations are becoming more and more popular, which has its justification - lower electricity bills and independence from variable energy prices. There is no coincidence that so many people decide to invest in this solution. Although the initial costs are quite high, they quickly pay off! It is very important to select appropriate conduits for this installation , which are largely responsible for its durability, efficiency, and safety of use. Without a doubt , the photovoltaic conduit is as important as other system elements, such as the inverter or the type of connectors used. Therefore, it must be very resistant to various factors, extremely durable, and fully protected against mechanical damage and flames.
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As you can see, the selection of conduits should be preceded by a thorough analysis of the most important parameters. Taking the above factors into account, we will certainly match the right product to our needs.