S 1.20 Selection of cable types suited in terms of their physical/mechanical properties

Initiation responsibility: Network planner; Head of Site/Bldg Technical Service; IT Security Management

Implementation responsibility: Site/Bldg Technical Service

When selecting cables, account is to be taken of technical requirements as regards transmission, and, in addition, attention must be paid to the environment in which the cables are to be run. For most cabling requirements, cables with the appropriate properties are available. The most important of these are listed here:

• indoor cables or outdoor cables;

• non-hosing cables for damp or wet areas;

• strain-relieved cables for overhead lines and extreme gradients;

• function-preserving cables in areas exposed to fire hazards;

• shielded cables for areas with strong electrical and inductive interference fields;

• armoured cables for those instances where sufficient mechanical protection cannot be ensured in any other way, e.g. in case of provisional layout on floors and walls.

Additional controls:

• Regarding the selection of cables; has the O&S officer (person responsible for operation and maintenance) been consulted with regard to known or anticipated adverse factors in the operational environment?

• Have possible alternatives regarding cable routing been considered?