Construction of cable VVG 3x1,5
1. A current-carrying vein - copper, single-wire or multiwire, round or sectoral forms, 1 or 2 classes in accordance with GOST 22483.
2. Insulation - made of polyvinylchloride plastic (PVC). Isolated strands of multicore cables have a distinctive coloring. The insulation of the zero veins is blue. Isolation of cores of grounding is carried out two-color (green-yellow coloring).
3. Twisting - isolated veins of two-, three-, four- and five-core cables are twisted; two-core cables have veins of the same cross-section, three-, four- and five-core wires have all the same-section conductors or one vein of a smaller cross-section (earth conductor or zero).
4. The casing is made of PVC plastic, in cables of grade ВВГнг from PVC of plasticity of the lowered combustibility. The thickness of the shell is given in Appendix
Application of VVG cable 3x1.5
The use of power cables with plastic insulation is regulated by the national standard GOST R 53769 - 2010.
The degree of fire hazard is used as the main criterion for this.
Based on such requirements, the cable and the VVG wire can be used for laying single cable power lines and lighting in dry and wet rooms for various purposes, on special cable racks, etc.
Group gasket is possible only with the use of fire protection.