Standards 110 Electric wiring 55 Electric cables 42 Buildings 34 Electric equipment 24 Copper alloys 20 Electromagnetic compatibility 20 Design and construction 19 Timber 16 Electric wiring, Interior 15 Milling cutters 14 Building 12 Concrete 12 Copper 12 Milling machinery 12 Sauna 11 Swimming pools 11 Testing 11 Gas cylinders 10 Household appliances, Electric 10 Tiles 10 Materials 9 Power supply 9 Ceramics 8 Electric cables sheating 8 Electric engineering 8 Insulation 8 Lighting 8 Pipe 8 Pipe, Plastic 8