The type designation codes indicate the design and intended use of electrical wires and cables in electrical installations.
There are different types of designation codes: The designation codes according to national standards with different different labeling schemes in each country and an internationally harmonized labeling. The harmonized labeling intends to replace the national standards quickly, but for some cable types national designation codes are still common.
In Germany, the abbreviation for cables and wires are standardized in
DIN VDE 0292 Type Designation Codes for cable designation
DIN VDE 0293-308 Identification of the cores of cables / wires and flexible wires by colors
Standard series DIN VDE 0281 for PVC-insulated cables
Standard series DIN VDE 0282 for rubber insulated cables