BS EN 50525-1 AMD1. Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U). Part 1. General requirements|Colour codes, Low voltage, Rated voltage, Cable sheaths, Codes, Determination of content, Mechanical testing, Electric cables, Cable cores, Electric conductors, Electrical properties of materials, Electrical testing, Power cables, Insulated cables, Sheathed cables, Mechanical properties of materials, Flexible cables, Identification methods, Electrical insulation, Marking