EN 50086 -2-4/A1 [documento electrónico] : conduit systems for electrical installations: part 2-4: particular requirements for conduit systems buried underground / European Commitee for Electrothecnical Standardization
EN 50098-1 [documento electrónico] : câblages dans les locaux des usagers pour les technologies de l'information: partie 1: accès de base RNIS / Comité Européen de Normalisation Electrotechnique
EN 50098-2 : customer premises cabling for information technology: part 2: 2048 kbit/s ISDN primery access and leased line network interface / European Committee for Electrotechnical Standardization
EN 50117-1 [documento electrónico] : coaxial cables: part 1: generic specification / European Commitee for Electrothecnical Standardization