EN 50085 -1/A1 : October 1998: cable trunking systems and cable ducting systems for electrical installations: part 1: general requirements / European Commitee for Electrothecnical Standardization
Conduit systems for electrical installations : part 2-1: particular requirements for rigid conduit systems: EN 50086 -2-1/A11: December 1998 / European Commitee for Electrothecnical Standardization
Conduit systems for electrical installations : part 2-2: particular requirements for pliable conduit systems: EN 50086 -2-2/A11: (December 1998) / European Commitee for Electrothecnical Standardization
Conduit systems for electrical installations : part 2-3: particular requirements for flexible conduit systems: EN 50086 -2-3/A11: (December 1998) / European Commitee for Electrothecnical Standardization