* 1. Conductor * Electrolytic copper, class 1 (up to 4 mm2) or class 2 (from 6 mm2) based on EN 60228 and IEC 60228.
* 2. Insulation * Cross-linked polyethylene (XLPE)
* The standard identification of insulated conductors is the following:
* 1 x Natural
* 2 x Blue + Brown
* 3G Blue + Brown + Yellow/Green
* 3x Brown + Black + Grey
* 4G Brown + Black + Grey+ Yellow/Green
* 4x Brown + Black + Grey + Blue
* 5 G Brown + Black + Grey + Blue + Yellow/green
* 3. Outer sheath * Flexible PVC, black colour.