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Install Fibre-Optic Cables
Issue 1 September 1995
4-21
Rule 3
Route fibre-optic cables away from groups of other cables where they may be
stretched by the weight of metal cable bundles, as fibre-optic cables are quite
flexible.
Rule 4
Avoid bending fibre-optic cables to a radius smaller than 1-1/2 inches (4 cm), to
prevent mechanical stress on the cables, as they are rather delicate. Plan your
use of cable ties to avoid crimping the cable or creating a fixed stress point
where, at a later time, movement of the cable causes it to exceed the minimum
bend radius.
Rule 5
Ensure fibre-optic cables are not pressed against any sheet metal edges by
subsequently installed cables.
Recommendation
In some such systems it may be required to run fibre-optic cables with the
input/output cables, such as in the cable slack manager or under a raised floor.
In these situations, protect the cable by running it in a dedicated area if
possible. When you must run the cable with other cabling, protect it by running it
through flexible conduit.
In the following illustration, the slot locations are for example purposes only.