Dear customers, we ask you to fill in plaint sheet after master finishes work and make sure that the master sticked on the warranty card. Without a coupon, we do not have any obligations. Read more...

 

Selection of cable section table

Section selection of Cable and wire. 

table for flats, summer cottages, houses and offices

Electrical conductor cross-section, mm

Voltage, 220 V 

Voltage, 380 V

current, А

power, kWt

current, А

power, kWt

1,5

19

4,1

16

10,5

2,5

27

5,9

25

16,5

4

38

8,3

30

19,8

6

46

10,1

40

26,4

10

70

15,4

50

33,0

16

85

18,7

75

49,5

Next, we need to calculate cross-section of wires and cables for rosette groups and lighting groups. If you look at the table or calculate by simple formulas for calculating the wires cross-section, it becomes clear that, for example, 0.5 square mm,  wire is quite suitable for lighting groups, and for wire groups there is enough wire with a cross section of 1.5 mm square.But, as a rule, wires with a diameter of at least 1.5 square mm, are used for lighting, and wires with a cross-section of at least 2.5 square mm, are used for rosette groups, unless, of course, power is required for devices whose total power does not exceed the limits that this wire can withstand. This is due to the fact that the wires, and no matter what metal they are made of, are subject to corrosion, various mechanical stresses both during installation and operation.


For example, according to the table, with a voltage in the network of 220 V, a wire with a cross section of 2.5 square mm can withstand current up to 27 A (5.9 kW). In order to protect the wires and consumers, in this case, an automatic device is installed as the protection, maximum operating current of which must be no more than 25 A.When designing electrical wiring, it is necessary to take into account the length of wiring that will feed the end user. Also, according to the table, it is possible to determine the cross section for the other types of load. Also, during the design, and then the installation of electrical wiring, do not forget about the selectivity of machines.In any case, electricity is invisible and does not forgive mistakes and careless attitude towards work. Trust professionals!

Server Service company performs any electrical work in Tashkent and throughout Uzbekistan.

The cost of services depends on many factors and is determined after the diagnosis and determination of work amount.

If you need high-quality electrical installation or services related to electrical equipment on an industrial scale - call us.

Inquiries are accepted from 9:00 a.m. to 7:00 p.m. by Tashkent phone numbers: (+99898) 128-04-02.