All cables should be routed on cable ladders and trays.
Trunking or conduits may be used for special mechanical protection of single field routed cables for
shorter distances. (Approx. 5m.) Where conduits are used, they shall be installed with open ends.
A computer based cable routing system reflecting the layout of the main cable support system (i.e.
cable ladders with width 300 mm and above) represented by ladder segment references, transit
numbers etc. and necessary describing information related to the individual cable including its route,
shall be used in the design.
Field cables may utilize the main cable support system provided the route of the individual cable is
being registered in the routing system and the filling and loading of the main cable support system is
The cable ladders should not be filled so the height of the cable ladder side rail is exceeded.
Redundant cable systems shall be routed separately as shown on fig.1 room N1.
Field routing inside rooms in safe locations may be on same cable rack/ladder if this is not in
conflict with the redundant coverage of the area as shown on fig.1 room N2.