The reference standards for availability mainly concern structured cabling. They include the project and the installation of the system as a whole, and also the technical characteristics of each component. Although the standards are structured differently for each continent, they all cover all the important topics and contain in particular the requirements for performance, safety and conformity of installations.

United States

EIA/TIA 568-C standards

For cable performance. This series, which supersedes the previous EIA/TIA 568-A and 568-B series, specifies the minimum wiring conditions for individual commercial buildings or complexes, including the physical, electrical and transmission requirements, maximum lengths and characteristics of the components.

EIA/TIA 942 standards

For installation design. This series specifies the wiring requirements for data centers.


EN 50173 standards

This series defines the design standards for structured wiring systems based on symmetrical copper pairs and optical fibres in different installation areas, which can include one or more buildings. It includes specifications for the structure and configuration for generic wiring, cable performance and the implementation options for a wide range of Voice Data Image services.

The EN 50173-5 standard is more specifically concerned with data centers.

EN 50174 standards

This series specifies the requirements for drawing up procedures and quality assurance documentation relating to IT wiring, in particular, the generic wiring systems designed according to the EN 50173 series.

Standard EN 50174-1 relates to installation specification and quality assurance.
Standard EN 50174-2 relates to installation planning and practices inside buildings.
Standard EN 50174-3 relates to installation planning and practices outside buildings.

TC215WG3 and EN 50-600 standards

This series specifies the special provisions for data center infrastructure.


This is a transmission medium that enables a larger bandwidth to be used than copper cables. Optical fiber cables have major advantages over copper cables: total immunity to electromagnetic interference, high transmission capacity, low attenuation, much smaller cable sizes (10 times smaller than a copper cable)…


With PoE technology, devices (Wi-Fi access points, cameras, etc.) can be supplied directly with the Ethernet data cable. In a single cable one has the passage of data and voltage to supply the peripherals. There are three types of PoE in relation to the power supplied:

  • PoE standard IEEE 802.3af (2003),
  • PoE + standard IEEE 802.3at (2007),
  • PoE ++ standard IEEE 802.3bt (2018).

For PoE++, the choice of connectors is fundamental because the powers in play begin to be considerable. The wiring standards must be respected because, when a live RJ 45 connector is disconnected, an electrical arc can be created, which damages the connector’s contacts. All the LCS3 connectors are certified PoE + and guaranteed for PoE++.


The main advantage of HD optical fiber solutions (panels, racks, optical fiber drawers, cassettes, etc.) is a large number of physical connections in a minimum amount of space. Another advantage is that they can be used for a scalable 40 or 100 Gigabit installation.