So, let's start with the fact that according to modern requirements, the cable for the outlets must be copper, necessarily with ground( ie three-core or five-core) and a cross-section of at least 1.5 mm2 according to the PUE table 7.1.1:
Here it should be explained,that under the group network is meant the line from the flaps to the sockets, lighting devices and other receivers of electricity.
Now it is a little clearer what cable to use for mounting the outlet line of the electrical network to 220 volts. It should also be noted that it is not advisable to lay a cable with a cross-section of 1.5 mm2 from the junction box to the outlet,in this case, connect a powerful electrical appliance to it will not work, if it is required. It is better for a single-phase network to take a cross section with a margin of 2.5 mm2.
As for the three-phase wiring, things can already be different here, becausewith a wire cross section of 1.5 mm2, a five-core cable can withstand a load of 10.5 kW, according to the table:
This is enough to connect a powerful electrical equipment used at home to the outlet. However, experience shows that even in a network with a voltage of 380 volts, the conductor is taken with a margin, namely, with a cross section of 2.5 mm2.
With the thickness of the conductors have been sorted out, now let's talk about another, no less important issue - what type and brand of conductor to choose. The matter is that for today there is a considerable quantity of fakes, at which use ignition of electroconducting can arise. The same PPPP wire is dangerous for wiring. We recommend that the outlets use BBG, VVGGG or NYM cable.
If you want to conduct wiring for the outlet group in an apartment or a private house, it is enough to choose the BBG brand. In fire-hazardous areas, for example, in a wooden house, it is recommended to use the cable VVGng or its more expensive imported analogue - NYM.
That's all I wanted to tell you on this issue. In order to consolidate the material provided, we decided to sum up and again indicate which cable brand and cross-section is best used for outlets in different cases:
- To connect a washing machine, TV and other not very powerful household appliances - BBV 3 * 2.5 mm2.
- For connection of powerful devices in a three-phase network( for example, if you need to connect a powerful 380-volt pump in the garage or a three-phase cooker in the kitchen) - BBG 5 * 2.5 mm2.
- The socket group in the wooden house - ВВГнг 3 * 2.5 мм2.
- If you are 100% sure that the outlet will be used exclusively for powering the luminaire or other low-power device, you can draw a conductor cross-section of 3 * 1.5 mm2.
Finally, we recommend you to view a useful video on the topic:
Now you know which cable for sockets to choose by section and name. If you liked the article, please share useful information with your friends in social networks!
