This part is intended to be referenced in contracts between cabling installers and their customers. However, the range of options featured in many of the clauses make a single conformance statement impossible. For this reason the standard should be read carefully to ensure that the requirements of the standard (as defined by the use of the word "shall") are adhered to where conformance is required under the terms of any contract.

EN 50174-2 : Installation planning and practices inside buildings

This standard comprises three parts. All three parts support the specification, implementation and operation of information technology cabling using both balanced copper and optical fiber cabling components. These components may be combined to provide cabling solutions either in accordance with the design requirements of EN 50173 or to meet the requirements of one or more application-specific standards (such as EN 50098-1 or EN 50098-2).

This part contains detailed requirements and guidance relating to the installation planning and practices inside buildings and is intended to be used by the personnel directly involved in the planning and installation of information technology cabling. It shall be used during the different implementation phases when installing information technology cabling, i.e. during the planning phase, the design phase and installation phase.

EN 50174-3 : Installation planning and practices outside buildings (Draft, not available until at least Dec 2002)

This part contains detailed requirements and guidance relating to the installation planning and practices outside buildings and is intended to be used by the personnel directly involved in the planning and installation of information technology cabling. It shall be used during the different implementation phases when installing information technology cabling, i.e. during the planning phase, the design phase and installation phase.