Materials used in the design of cable products, only two are aluminum and copper. Aluminum wires lose copper in all indicators, except for the cost. They have worse electrical conductivity and higher resistivity. With bending, they break, and they are difficult to switch. Therefore, when choosing a wiring cable, you should give preference with copper wired veins - this will be the best solution.
1
First, it is necessary to decide on the cable cross section. There are many methods and calculated tables. But in order not to get confused, you can use a simplified selection - in 90% of cases it is enough. For groups of sockets, a cross section of 2.5 square millimeters is used, for lighting - 1.5. Introduction to the apartment should be at least 4 square millimeters, and input to the cottage is at least 6 square millimeters.
2
The cable should be laid in three-wire. The third wire is necessary for the organization of protective grounding. Even if you have an old wiring and grounding is not provided, it will be baptized for the future. Remember that the ground is invented not just like that - it is the protection of your life from electric shock in abnormal situations.
3
The most popular cable brand for organizing hidden wiring is the PVA brand. This is a wire of a circular cross section from the emergence of annealed copper in polyvinyl chloride isolation. External insulation is made of the same material. It has good flexibility, high electrical conductivity and has an attractive appearance. Due to this, it is suitable for replacing short standard cables for longer in various household appliances.
4
The VG cable is a power cable from copper lived in a polychlorvinyl interior and external insulation. It happens round and flat cross section. Flat design is very convenient to lay in the wall stroke and cable channels for hidden wiring. There is a non-combustible performance of this cable - marked as "WEGN". In rooms with an increased probability of ignition, it is advisable to apply it.
5
PUNP brand wires are often used when installing indoor wiring. Have a similar design, but a thinner external and internal isolation. Accordingly, the lower price, compared to the VG. This model is advisable to apply in places where high electrical wiring is not planned.
That's basically it. These brief recommendations are quite enough to make an independent selection of cable products to organize an intramonious power network. Repair with pleasure!
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