EN 50174-1:2009

SLOVENSKI STANDARD
01-oktober-2009
1DGRPHãþD
SIST EN 50174-1:2001
Informacijska tehnologija - Polaganje kablov - 1. del: Specifikacija in zagotavljanje
kakovosti
Information technology - Cabling installation -- Part 1: Installation specification and
quality assurance
Informationstechnik - Installation von Kommunikationsverkabelung -- Teil 1:
Installationsspezifikation und Qualitätssicherung
Technologies de l'information - Installation de câblages -- Partie 1: Installation
spécification et assurance qualité
Ta slovenski standard je istoveten z: EN 50174-1:2009
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50174-1
NORME EUROPÉENNE
May 2009
EUROPÄISCHE NORM
ICS 35.110 Supersedes EN 50174-1:2000

English version
Information technology -
Cabling installation -
Part 1: Installation specification and quality assurance

Technologies de l'information -  Informationstechnik -
Installation de câblages - Installation von
Partie 1: Spécification de l’installation Kommunikationsverkabelung -
et assurance de la qualité Teil 1: Installationsspezifikation
und Qualitätssicherung
This European Standard was approved by CENELEC on 2009-05-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50174-1:2009 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 215, Electrotechnical
aspects of telecommunication equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50174-1 on
2009-05-01.
This European Standard supersedes EN 50174-1:2000.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-05-01
EN 50174 comprises three parts. All three parts support the specification, implementation and operation of
information technology cabling. There are specific requirements for cabling systems that are in accordance
with the design requirements of the EN 50173 series. However, the three parts also apply to cabling systems
of any design including those in accordance with standards such as EN 50098-1 or EN 50098-2.
This part, EN 50174-1, is concerned with specification, quality assurance, documentation and administration
of information technology cabling to be installed, together with its subsequent operation and maintenance. It
sets out the responsibilities of information technology cabling installers and premises owners or appointed
representatives separately, and is intended to be referenced in relevant contracts.
It does not cover those aspects of installation associated with the transmission of signals in free space
between transmitters, receivers or their associated antenna systems (e.g. wireless, radio, microwave or
satellite).
__________
– 3 – EN 50174-1:2009
Contents
Introduction . 5
1 Scope and conformance . 8
1.1 Scope . 8
1.2 Conform ance . 8
2 Normative references . 8
3 Terms, definitions and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 12
4 Requirements for specifying installations of information technology cabling . 12
4.1 Documentation . 12
4.2 Planning . 18
4.3 Products and processes. 22
4.4 External network service provision . 23
4.5 Operating procedures . 24
4.6 Maintenance . 27
5 Requirements for installers of information technology cabling . 28
5.1 Documentation and administration . 28
5.2 Products and processes. 29
5.3 Power supplies . 30
5.4 Surveys . 30
6 Installation complexity . 31
6.1 Requirements . 31
6.2 Recommendations . 31
Annex A (normative) Minimum requirements for technical specifications and quality plans . 32
A.1 General. 32
A.2 Technical specification . 32
A.3 Quality plan . 32
Annex B (normative) Polarity maintenance: Connecting hardware for multiple optical fibres . 33
B.1 General. 33
B.2 Duplex connecting hardware interfaces . 33
B.3 Array connecting hardware interfaces . 37
Annex C (informative) Terminating balanced cables on terminating blocks in distributors . 42
C.1 General. 42
C.2 The use of the same type of connector at each end of a cable . 42
C.3 The use of a different type of connector at each end of a cable . 42
C.4 Relation between the pins of connectors according to EN 60603-7 and the tags of a
terminating block . 42

Annex D (informative) Compatibility between transmission systems (balanced and unbalanced)
sharing the same cable sheath within information technology cabling . 43
D.1 Introduction . 43
D.2 Recommendations concerning cable sharing . 43
D.3 Factors to be taken into account to ensure satisfactory performance . 44
D.4 Guidelines for reducing interference between transmission systems within the same cable
sheath. 45
D.5 Cabling qualification . 45
D.6 Particular installation requirements and recommendations . 45
D.7 Cable management . 46
D.8 Regulatory aspects . 46
Bibliography . 47
Figures
Figure 1 – Schematic relationship between the EN 50174 series and other relevant standards . 6
Figure B.1 – Duplex connecting hardware plug . 34
Figure B.2 – Duplex connecting adapter . 34
Figure B.3 – Duplex patch cord . 34
Figure B.4 – Views of crossover patch cords . 35
Figure B.5 – Optical fibre sequences and adapter orientation in patch panel for the Symmetrical Position
Method . 36
Figure B.6 – Optical fibre sequences and adapter orientation in patch panel for the Reverse-Pair
Position Method. 36
Figure B.7 – Array connector cable or patch cord (key-up to key-up). 38
Figure B.8 – Array adapter with aligned keyways . 38
Figure B.9 – Transition assembly . 39
Figure B.10 – Connectivity method for duplex cabling . 40
Figure B.11 – Connectivity method for array cabling . 41
Tables
Table 1 – Contextual relationship between EN 50174 series and other standards relevant
for information technology cabling systems . 7
Table 2 – Minimum requirements of administration systems . 25
Table 3 – Minimum requirements of operational administration systems . 26
Table 4 – Level of installation complexity . 31
Table 5 – Level of operational complexity . 31
Table A.1 – Minimum requirements for technical specification . 32
Table A.2 – Minimum requirements for quality plan . 32
Table B.1 – Optical fibre colour code scheme of EN 60794-2 . 33
Table C.1 – Examples of the relations between the EN 60603-7 series pins and the tags
of the terminating block . 42

– 5 – EN 50174-1:2009
Introduction
The importance of services delivered by information technology cabling infrastructure is similar to that of
utilities such as heating, lighting and electricity supplies. As with those utilities, interruptions to service can
have a serious impact. Poor quality of service due to lack of planning, use of inappropriate components,
incorrect installation, poor administration or inadequate support can threaten an organisation’s effectiveness.
There are four phases in the successful implementation of information technology cabling. These are:
a) design;
b) specification – the detailed requirement for the cabling, including the planning of its accommodation and
associated building services addressing specific environments (e.g. electromagnetic) together with the
quality assurance requirements to be applied;
c) installation – in accordance with the requirements of the specification;
d) operation – the management of connectivity and the maintenance of transmission performance during
the life of the cabling.
This European Standard is in three parts and addresses the specification, installation and operational
aspects. The EN 50173 series and other application standards cover design issues.
EN 50174-1 is used during the specification phase. It addresses the:
– installation specification, quality assurance documentation and procedures;
– documentation and administration;
– operation and maintenance.
This part, EN 50174-2 and EN 50174-3 are intended to be used by the personnel directly involved in the
planning aspects (of the specification phase) and installation phase. EN 50174-2 is applicable inside
buildings and EN 50174-3 is applicable outside buildings.
This European Standard is also relevant to:
• architects, building designers and builders;
• main contractors;
• designers, suppliers, installers, inspectors (auditors), maintainers and owners of information technology
cabling;
• public network providers and local service providers;
• end users.
The requirements and recommendations of Clause 4 are primarily for owners of premises housing
information technology systems. The owners may delegate selected responsibilities to designers, specifiers,
operators and maintainers of installed information technology cabling.
The requirements and recommendations of Clause 5 are primarily for the installers of information technology
cabling.
Figure 1 and Table 1 show the schematic and contextual relationships between the standards produced by
CLC/TC 215 for information technology cabling, namely:
1) this and other parts of the EN 50174 series;
2) generic cabling design (EN 50173 series);
3) application dependent cabling design (e.g. EN 50098 series);
4) testing of installed cabling (EN 50346);
5) equipotential bonding requirements (EN 50310).

EENN 50098-50098-1:1: C Cuussttoommerer p prreemmiisseess EENN 501 50173-73-2:2: I Innffoormrmaattiioonn t teecchnolhnologogyy::
ccablabliinng fg foorr i innffoormrmatatiion ton teecchhnonollogyogy - - GGenereneriicc c cablabliing -ng - OOffffiiccee prpreemmiisseess
IISSDDNN b baassiicc a acceccessss
EENN 5017 50173-3-3:3: I Innffoorrmmatatiion ton teecchhnnoollogyogy::
EENN 50 50098-098-2:2: C Cuussttoommeerr pr preemmiisseses GGeenerneriicc c cablabliinng -g - IIndusndusttrriiaall pr prememiisseess
EENN 50173 50173--11:: IInnffoorrmmatatiion ton teecchhnnoollogyogy::
ccablabliing ng ffoorr i innffoorrmmatatiion ton teecchhnolnologyogy - -
EENN 50173- 50173-4:4: I Innffoorrmmatatiion ton teecchnolhnologyogy:: GGeenerneriicc c cablabliinngg - - GGeenerneralal r requiequirreemmententss
2048 2048 kkbbiitt//ss IISSDDNN p prriimmararyy a acccceessss and and
GGeneenerriicc c cablabliing ng -- HHomomeses
lleeasased led liine nne neettwwoorrkk i inntteerrffacacee
EENN 5 50173-0173-5:5: I Innffoorrmmatatiion ton teecchnolhnologogyy::
GGenereneriicc c cablabliing -ng - DDaatta ca cententrreess
EENN 5017 50174-4-11:: I Innffoorrmmatatiion ton teecchhnnoollooggyy – – EENN 50310 50310:: A Applppliiccatatiion ofon of e equiquipotpotententiiaall
bbondionding and eng and eaarrtthhiingng iinn b buuiillddiingsngs w wiitthh
CCablabliing ing innssttalalllaattiion –on – IInsnsttaallllaattiioonn
iinnffoorrmmatatiion ton teecchhnolnologogyy equiequipmpmentent
ssppececiiffiiccatatiion anon and qd qualualiittyy as asssuurrancancee
EENN 501 50174-74-2:2: I Innffoormrmaattiioonn t teecchnolhnologogyy - -
CCablabliing ing innssttalalllaattiionon - - IInnssttaallllaattiion on
plplananniningng and pr and pracacttiicceess i innssiide bde buuiilldidinnggss
EENN 501 50174-74-3:3: I Innffoormrmaattiioonn t teecchnolhnologogyy - -
CCablabliing ing innssttalalllaattiionon - - IInnssttaallllaattiion on
plplananniningng and pr and pracacttiicceess out outssiide bde buuiillddiingsngs
EENN 50 50346:346: I Innffoorrmmatatiion ton teecchhnolnologogyy --
CCaabblliing ing innssttalalllaattiionon - -
TTeessttiing ng ofof i innssttalallled ced cablabliinngg

Figure 1 – Schematic relationship between the EN 50174 series
and other relevant standards
– 7 – EN 50174-1:2009
Table 1 – Contextual relationship between EN 50174 series and other standards
relevant for information technology cabling systems
Building design phase Generic cabling Specification phase Installation phase Operation phase
design phase
EN 50310 EN 50173 series EN 50174-1 EN 50174-1
except
EN 50173-4
5.2: Common bonding 4: Structure 4: Requirements for 4: Requirements for
network (CBN) within a specifying installations specifying installations
5: Channel performance
building of information of information
technology cabling technology cabling
7: Cable requirements
6.3: AC distribution
system and bonding of 5: Requirements for
8: Connecting hardware
the protective conductor installers of information
requirements
(TN-S) technology cabling
9: Requirements for
cords and jumpers
A: Link performance
limits
Planning phase
and
EN 50173-4 EN 50174-2 EN 50174-2
4 and 5: Structure 4: Requirements for 5: Requirements for the
planning installations of installation of
6: Channel performance
information technology information technology
cabling cabling
8: Cable requirements
6: Segregation of 6: Segregation of
9: Connecting hardware
metallic information metallic information
requirements
technology cabling and technology cabling and
10: Requirements for
mains power cabling mains power cabling
cords and jumpers
7: Electricity distribution
A: Link performance
systems and lightning
limits protection
and and
EN 50174-3 EN 50174-3
and and
(for equipotential (for equipotential
bonding) bonding)
EN 50310 EN 50310
5.2: Common bonding 5.2: Common bonding
network (CBN) within a network (CBN) within a
building building
6.3: AC distribution 6.3: AC distribution
system and bonding of system and bonding of
the protective conductor the protective conductor
(TN-S) (TN-S)
and
EN 50346
4: General requirements
5: Test parameters for
balanced cabling
6: Test parameters for
optical fibre cabling
1 Scope and conformance
1.1 Scope
This European Standard specifies requirements for the following aspects of information technology cabling:
a) installation specification, quality assurance documentation and procedures;
b) documentation and administration;
c) operation and maintenance.
This European Standard is applicable to all types of information technology cabling including generic cabling
systems designed in accordance with the EN 50173 series.
Safety (electrical safety and protection, optical power, fire, etc.) and electromagnetic compatibility (EMC)
requirements are outside the scope of this European Standard and are covered by other standards and
regulations. However, information given in this European Standard may be of assistance in meeting these
standards and regulations.
1.2 Conformance
For a cabling installation to conform to this European Standard:
a) the specification of the installation shall meet the requirements of Clause 4;
NOTE The requirements and recommendations of Clause 4 are primarily for owners of premises housing information technology
systems. The owners may delegate selected responsibilities to designers, specifiers, operators and maintainers of installed
information technology cabling. The party responsible for demonstrating conformance should be clearly stated in the appropriate
section of the documentation.
b) the installer shall meet the requirements of Clause 5;
c) the equipotential bonding system within the premises shall be in accordance with EN 50310;
d) where a lightning protection system is required, it shall conform to the “integrated lightning protection
system” according to EN 62305-4;
e) other lightning protection systems, including the “isolated lightning protection system” according to
EN 62305-3 are allowed provided that specific restrictions are applied both to the implementation of the
information technology cabling and the requirements of EN 50310 as agreed between the planners of
the lightning protection system and the information technology cabling;
f) local regulations, including safety, shall be met.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 50173-1:2007, Information technology – Generic cabling systems – Part 1: General requirements
EN 50173-2, Information technology – Generic cabling systems – Part 2: Office premises
EN 50173-3, Information technology – Generic cabling systems – Part 3: Industrial premises
EN 50173-4, Information technology – Generic cabling systems – Part 4: Homes
EN 50173-5, Information technology – Generic cabling systems – Part 5: Data centres
EN 50174-2, Information technology – Cabling installation – Part 2: Installation planning and practices inside
buildings
EN 50174-3, Information technology – Cabling installation – Part 3: Installation planning and practices
outside buildings
– 9 – EN 50174-1:2009
EN 50310, Application of equipotential bonding and earthing in buildings with information technology
equipment
EN 50346, Information technology – Cabling installation – Testing of installed cabling
EN 60332-1-2, Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test for vertical
flame propagation for a single insulated wire or cable – Procedure for 1 kW pre-mixed flame (IEC 60332-1-2)
EN 62305-4, Protection against lightning – Part 4: Electrical and electronic systems within structures
(IEC 62305-4)
HD 384/HD 60364 (series), Low-voltage electrical installations (IEC 60364 series, mod.)
IEC 60050-151:2001, International Electrotechnical Vocabulary – Chapter 151: Electrical and magnetic
devices
IEC 60050-161:1990, International Electrotechnical Vocabulary – Chapter 161: Electromagnetic
compatibility
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Where the cabling is designed in accordance with standards in the EN 50173 series, the additional
definitions of those standards are applicable.
NOTE As far as possible definitions of series IEC 60050 have been used; reference to these standards is indicated in square brackets.
3.1.1
acceptance test of installed cabling
contractual test to prove to the customer that the installed cabling meets specific conditions of its
specification
[derived from IEC 60050-151:2001, 151-16-23]
3.1.2
array connector
an optical fibre connector containing a single ferrule with multiple terminated fibres arranged in a line or a
series of lines
3.1.3
building entrance facility
space that provides all necessary mechanical and electrical services for the entry of cables into a building
[EN 50173-1:2007, 3.1.6, modified]
3.1.4
cabinet
enclosed construction for housing closures and other information technology equipment
3.1.5
cable element
smallest construction unit in a cable
NOTE 1 A cable element may have a screen.
NOTE 2 A pair, a quad, a single isolated lead with coaxial screen and a single optical fibre are examples of a cable element.
[EN 50173-1:2007, 3.1.9, modified]

3.1.6
cable management system
system used for the support and/or containment, retention, protection of all types of cables, information and
communication lines, electrical power distribution conductors and their associated accessories (includes
ducts and tubes housing, or intended to house, blown information technology cables and/or cable elements)
3.1.7
cabling component
any product associated with the cabling installation including cables, connecting hardware, closures,
cabinets, frames, racks and pathway systems together with components used to provide earth connections
for the cabling installation
3.1.8
closure
fixture or fitting of either open or closed construction intended to contain connecting hardware
3.1.9
draw-box
space in a pathway that allows the routing of cables during the cable installation process
3.1.10
electrostatic discharge
transfer of electric charge between bodies of different electrostatic potential in proximity or through direct
contact
[IEC 60050-161:1990, 161-01-22]
3.1.11
electromagnetic disturbance
any electromagnetic phenomenon which may degrade the performance of a device, equipment or system, or
adversely affect living or inert matter
NOTE An electromagnetic disturbance may be an electromagnetic noise, an unwanted signal or a change in the propagation medium
itself.
[IEC 60050-161:1990, 161-01-05]
3.1.12
frame
rack
open construction for housing closures and other information technology equipment
3.1.13
identifier
unique item of information to distinguish a specific component of the cabling installation
3.1.14
information technology
telecommunications
branch of technology concerned with the transmission, emission and reception of signs, signals, writing,
images and sounds; that is, information of any nature by cable, radio, optical or other electromagnetic
systems
[EN 50173-1:2007, 3.1.50, modified]
3.1.15
information technology equipment
active or passive equipment necessary to deliver a specific application
NOTE Examples include hubs, switches, routers, adapters.

– 11 – EN 50174-1:2009
3.1.16
installer
person installing cabling components
NOTE No design functions are assumed.
3.1.17
jumper
one or more cable elements without connectors used to make a connection between terminated cables
3.1.18
label
means of marking a specific component of the information technology infrastructure with its identifier and
(optionally) other information and intended to be fixed to, or be part of, the component
3.1.19
minimum bend radius during installation
minimum radius as specified by the cable manufacturer, supplier or in accordance with the relevant product
standard to which a cable or cable element is allowed to be subjected during installation
3.1.20
minimum bend radius during operation – static
minimum radius as specified by the cable manufacturer, supplier or in accordance with the relevant product
standard to which a cable or cable element is allowed to be subjected following installation and fixed in its
final operating position
3.1.21
minimum bend radius during operation – dynamic
minimum radius as specified by the cable manufacturer, supplier or in accordance with the relevant product
standard to which a cable or cable element is allowed to be subjected under conditions where the cable or
cable element is subject to movement
3.1.22
pathway
defined route for cables between termination points
3.1.23
pathway system
cable management system, or other area or volume defined by markings
3.1.24
record
collection of information about, or related to, a specific element of the information technology infrastructure
3.1.25
scope of work
the detailed definition of the tasks involved in an installation or particular phase of an installation
3.1.26
service loop
excess length of cable or cable element(s)
3.1.27
space
specified volume
NOTE Examples include room, maintenance hole or part thereof, housing closures and/or other information technology equipment.

3.1.28
termination point
free or fixed connectors (e.g. plugs or sockets) fitted to an installed cable
3.1.29
transition assembly
assembly of optical fibres and connectors, with an array connector on one end and simplex or duplex
connectors on other end
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
Where the cabling is designed in accordance with standards in the EN 50173 series, the additional
abbreviations of those standards are applicable.
ENI External network interface
ESD Electrostatic discharge
4 Requirements for specifying installations of information technology cabling
4.1 Documentation
4.1.1 Installation specification
4.1.1.1 Requirements
An installation specification shall be prepared in accordance with the requirements of this clause. The
installation specification shall be agreed with the installer prior to the commencement of the installation.
The installation specification shall comprise:
a) the technical specification (see 4.1.2);
b) the scope of work (4.1.3).
The installation specification shall detail how the following have been taken into account:
1) other building services such as mains power distribution and earthing systems;
2) circuits for smoke/fire detection and associated controls;
3) heating, ventilation and air conditioning (HVAC) infrastructures;
4) piping systems (water supply and waste, fire suppression);
5) other relevant infrastructures.
The installation specification shall detail the applicable legislation, regulations and compliance statements
including:
– building regulations relating to the installation;
– specific site regulations;
– safe working practices;
– external network service protection;
– contractors’ authorization.
– 13 – EN 50174-1:2009
The installation specification shall detail the site contacts with responsibilities for:
• operational requirements;
• site information (including access and applicable restrictions, knowledge of relevant hazardous areas);
• technical requirements;
• documentation of existing cabling, if relevant;
• compatibility of existing information technology cabling components;
• items to be issued to the information technology cabling installer by, or on behalf of the premises owner
or appointed representative;
• storage of materials;
• installation of cabling by a third party;
• main contractor and/or sub-contractors;
• transfer of property and/or responsibility.
4.1.1.2 Recommendations
The installation specification should reflect predictable expansion to the cabling system, whether from the
need to support additional users or increases in quantity or type of applications, with reference to:
a) pathways and pathway systems;
b) cabinets, frames and racks;
c) termination points;
d) the mains power supply system.
The quantity of termination points should reflect the predicted requirements over the intended life of
information technology cabling.
The installation specification should contain the elements of the information technology strategy that include
details of:
1) the application(s) to be supported by the installed cabling highlighting, where relevant, current and
future requirements for compliance with information technology standards;
2) external network service provision and its interface(s) to the information technology cabling (see 4.4);
3) resilience planning;
4) security requirements/access restrictions.
4.1.2 Technical specification
4.1.2.1 General
The requirements of 4.1.2.2 and 4.1.2.3 apply in all cases. The minimum requirements for the development
of a technical specification, based upon the installation complexity level of Clause 6, are detailed in Annex A.
4.1.2.2 Safety
The technical specification shall (with reference to EN 50174-2 and EN 50174-3):
a) identify and classify any hazardous areas within the pathways and at termination points;
b) detail the boundaries of hazardous, or potentially hazardous areas.

4.1.2.3 Performance and configuration
4.1.2.3.1 Requirements
The technical specification shall detail the required transmission performance of the cabling to be installed:
a) when subject to the defined operational environment (see 4.1.2.5);
b) in conjunction with existing cabling.
NOTE The required transmission performance may be achieved by the selection of components with appropriate environmental
performance or by mitigation products or techniques that modify the defined environment including:
– isolation from the defined environment (by means of protection/segregation);
– separation from the defined environment.
The technical specification shall detail any mitigation products or techniques necessary to allow the
components selected to be installed and operate as specified when subjected to the defined environmental
conditions.
The technical specification shall detail the:
1) presentation of cable elements at interfaces to the installed cabling;
2) treatment of cable elements not terminated within connecting hardware.
NOTE 1 Annex B contains requirements and recommendations for the maintenance of polarity within cabling terminated with
connecting hardware housing multiple optical fibres.
NOTE 2 Annex C provides information about possible connections between the wires and the pins of information technology outlets
within generic cabling systems in accordance with the EN 50173 series. The same set of combinations between wires and pins should
be used throughout the whole cabling installation.
The technical specification shall contain the requirements for:
– the pathways, pathway systems, cables, cabinets, frames, racks, closures and termination points (see 4.3);
– installation accessories and processes to be used during the installation;
– the protective earthing, functional earthing and equipotential bonding of cabling components and
accessories. See HD 384/HD 60364 series, EN 50174-2, EN 50174-3 and EN 50310.
4.1.2.3.2 Recommendations
The technical specification should reflect the recommendations of Annex D where multiple applications are
to be transmitted within a single cable.
4.1.2.4 Ancillary information
4.1.2.4.1 Requirements
The technical specification shall detail:
a) the requirements for the operational lifetime of the cabling installation;
b) any measures required to prevent unauthorised access to pathways, pathway systems, cabinets,
frames, racks, closures and cords;
c) the location of, and requirements for, any relevant external network interfaces (ENIs) (see 4.4);
d) infrastructure requirements necessary to support planned extensions of the installation;
e) the requirements to maintain supply of the cabling components or suitable alternatives during
maintenance, repair and extensions throughout the operational lifetime of the installed cabling.
The technical specification shall define the:
1) level of administration system to be applied to the cabling infrastructure (see 4.5.2);
2) range of documentation to be supplied by the installer including any requirements to link records to each
other and to other building services records;

– 15 – EN 50174-1:2009
3) format of the documentation (e.g. to match the administration system);
4) labelling to be undertaken by the installer (see EN 50174-2 and EN 50174-3);
5) specification of labels (as a minimum, meeting the requirements of 5.2.5);
6) requirements for inspection and testing;
7) format of inspection and test documentation;
8) requirements for acceptance of the installation;
9) format of acceptance test result documentation (e.g. to match the administration system) together with
other information relating to the test e.g. type of tester used, date of test, operator, termination point
identifier, remedial action taken in the event of failed test, re-test results.
4.1.2.4.2 Recommendations
The format of the final cabling documentation should facilitate changes to be made to the installed cabling
throughout its intended operational life.
Where used, drawings should use commonly understood, unique and unambiguous symbols (an example of
such a system is IEC 60617).
4.1.2.5 Environmental conditions
4.1.2.5.1 Requirements
The technical specification shall detail, where known, the intended installation and operational environmental
conditions taking into account:
a) mechanical effects:
– shock/bump, vibration, tensile force, crush, impact, bending and flexing;
b) ingress of contaminants:
– immersion;
c) climatic and chemical effects:
– temperature range, rate of change of temperature;
– humidity range including condensation and icing effects;
– solar radiation;
– liquid or gaseous chemical pollution;
d) electromagnetic effects.
NOTE The list above is based on the environmental classification of EN 50173-1.
In addition, the technical specification shall detail, where known, the intended installation and operational
environmental conditions taking into account:
1) atmospheric pressure;
2) biological attack (e.g. mould or fungal growth);
3) physical damage (accidental or malicious) including damage caused by animals;
4) presence, or potential presence, of hazards (such as contaminating, toxic or explosive materials);
5) the movement of air (e.g. caused by fans, heating and ventilation systems);
6) wind effects;
7) impact of both direct lightning strike and lightning induced overvoltages.
NOTE A number of standards exist for the classification of environments relevant to information technology components and
equipment. Reference should be made to EN 60721 series, HD 60364-1:2008, EN 300 019-1-1 (for storage) and EN 300 019-1-3 (for
operation).
4.1.2.5.2 Recommendations
The technical specification should include a risk assessment including abnormal environmental conditions
such as:
a) flooding;
b) immersion in fluids following the operation of sprinkler systems;
c) lightning strike;
d) earthquake.
The risk assessment should take into account the nature and duration of such conditions and should result in
a risk management plan that may have an effect on the requirements for component performance or
mitigation.
4.1.3 Scope of work
4.1.3.1 Pre-installation
4.1.3.1.1 Requirements
The scope of work shall detail requirements for:
a) any building work required on each pathway;
b) pathway preparation and the installation of pathway systems;
c) accommodation of the terminating devices for external and internal cables at building entrance facilities;
d) the quantities of cabling components and installation accessories;
e) additional surveys to be undertaken to supplement information in the scope of work.
The scope of work shall define:
1) the responsibilities for the identification, design and completion of the works involved;
2) the responsibilities for obtaining all necessary clearances and permits;
3) the location of storage facilities for cabling components and installation accessories;
4) a system for the disposal of waste components and/or installation materials.
4.1.3.1.2 Recommendations
The scope of work should contain:
a) site plans that are marked up to show the works required;
b) details of the facilities (such as telephone and accommodation) to be used by the installer;
c) details of the materials control system.
4.1.3.2 Installation
4.1.3.2.1 Requirements
The scope of work shall detail locations of:
a) spaces;
b) pathways;
c) cabinets, frames and racks;
d) closures;
e) termination points.
– 17 – EN 50174-1:2009
The scope of work shall detail requirements for:
1) warning signs and equipment to ensure safe working (including participation in fire drills);
2) the pathway systems to be used in each pathway;
3) the cables to be installed in each pathway;
4) jointing and/or termination at each termination point;
5) marking and labelling the cabling components;
6) the quantity and type(s) of inspection and testing to be applied to the cablin
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