Every year there are technological changes in various fields of activity. New developments, more advanced and functional, are being introduced. Similar innovations touched systems for laying cables.
Metal hose in PVC insulation: characteristics and features
A metal hose is used for laying cables of various networks:
- communication lines;
- electrical wiring systems;
- ventilation and heating;
- air conditioning systems etc.
The direct purpose of a metal hose in PVC insulation is to prevent cable damage and ensure reliable fire safety in the event of a short circuit. If you compare it with a simple metal hose, then the advantages will be on the isolated side.
- It has high water and dust resistance.
- It has increased resistance to the influence of external environmental factors.
- High durability of the materials of the product, not allowing breaks.
- Using a metal hose in isolation, it is possible to make the installation of cable wiring hermetically.
- The product has a long service life, as the material has good corrosion resistance.
Installation of the product can be carried out at temperature indicators from –5 to +60 ° , while the metal hose itself can withstand even lower temperatures up to –45 ° . It is also worth noting that the product has a high degree of protection against dust and moisture - IP65.
The metal hose in PVC insulation can be of various diameters, the smallest - 10 mm, the largest - 80 mm. It is made of steel, galvanized tape and an insulating sheath. The material used for insulation - PVC (polyvinyl chloride) - has high fire resistance and does not support combustion. These features make it possible to use the product for the installation of electrical networks in rooms at various enterprises where increased fire safety is required.
Alternative cable management systems
There are a large number of products that allow you to make cable installation quickly and conveniently. To do this, use:
- plastic corrugation;
- simple and perforated cable channels;
- metal hose ordinary and in isolation;
- metal trays for wiring.
To understand which product is most suitable for the installation of a particular wiring system, it is necessary to consider the advantages and disadvantages of each.
Corrugation
The advantages include the flexibility and lightness of the material. Corrugation can be used for both hidden and outdoor wiring. Disadvantage: the fragility of the product, under mechanical stress, it can break or crack.
Cable channels
The product is intended for external wiring only. A big plus is that the cable channel has a removable cover, which allows you to access the wire if necessary. Manufacturers also took care of the aesthetic appearance of the product, therefore, in addition to white, cable ducts are made to match the color of wood. Minus - the material is inflexible, which causes some inconvenience during installation.
Metal trays
They have proven themselves well in the industrial field, as they prevent damage to the cable during mechanical stress. The disadvantage is that the material does not have flexibility and is rather bulky.
Metal hose
The main advantage of a metal hose is its strength and flexibility. It is convenient for installation and allows you to reliably protect the cable from damage. But, despite this, it still has its drawback. The tape from which it is made can cause tears if mishandled.
The advantages of a PVC-coated metal hose
The PVC metal hose is a corrugated metal pipe in isolation, which allows it to be used for an electrical wiring system even inside structures that can easily ignite. When bent, it does not lead to a change in the bore inside and excludes the appearance of microcracks and disturbances in the metal under mechanical stress.
Manufacturers produce metal hoses in PVC insulation in bays: a small diameter of 50 m, a large diameter of 30 m. Installation does not require special, special tools. All that is needed is a grinder or pipe cutter. Brass fittings are used to connect the metal hose.
The metal sleeve in PVC insulation is very reliable during operation. Since the material from which it is made is quite durable, the metal hose does not require additional maintenance during use. It can be used in concrete screeds, laid in gates, covered with decorative panels or plastered into the wall.
In modern construction quite often began to use a metal hose. The price of a metal hose will depend on the diameter of the product. Naturally, the larger the diameter, the higher the cost. On average, a metal hose with a diameter of 10 mm will cost 10 rubles per 1 meter, and with a diameter of 80 mm - 250 rubles per 1 meter.
The use of such material for wiring will protect the home from possible fire during a short circuit.