How to Buy

Choose type cable
1. Each live conductor must be rigid (solid), due to the fact that all the sockets and switches are designed for mounting a hard wire.
2. Choose type occasion. Basically there are three brand cables: NYM, VVG, PUNP. Cable NYM - single-wire cable with copper conductors having a reliable triple insulation.

The first layer - PVC, the second layer - rubber shell, and the third - each copper conductor in PVC. But this type of wire has a number of shortcomings. For example, this is not recommended to put in a raw concrete and in the open air, it has a large diameter and is quite expensive. But if you're not going to lay cable in the fresh concrete and just decided to change the wiring at home and want to choose to do a good, solid wire, then take it, of course, NYM.
VVG cable - a cable with copper conductive solid conductors, PVC insulated - value for money. It has double insulation: PVC overall and each lived in PVC. VVG can run anywhere: in the street and in the concrete. Isolation had slightly worse than the NYM, but better than PUNP.

If you do the repairs budget and want to avoid unnecessary expenses, we advise you to pay attention to the most simple and fairly reliable, well looked like for use in a residential cable PUNP. It has double insulation: PVC 1st overall, 2nd in every vein of PVC. Isolation him thinner than the NYM and VVG, but also not bad.
Now choose the wire size and number of conductors. According to the existing standard wire should be three-wire. Conductor cross section for sockets - 2.5 mm2 for lighting - 1.5 mm2, and for electric stove - 4mm2.