EN 50174-2:2009/A1:2011

SLOVENSKI STANDARD
01-maj-2011
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Information technology - Cabling installation - Part 2: Installation planning and practices
inside buildings
Informationstechnik - Installation von Kommunikationsverkabelung - Teil 2:
Installationsplanung und Installationspraktiken in Gebäuden
Technologies de l'information - Installation de câblages - Partie 2: Planification et
pratiques d'installation à l'intérieur des bâtiments
Ta slovenski standard je istoveten z: EN 50174-2:2009/A1:2011
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 50174-2/A1
NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM
ICS 35.110; 91.140.50
English version
Information technology -
Cabling installation -
Part 2: Installation planning and practices inside buildings

Technologies de l'information -  Informationstechnik -
Installation de câblages - Installation von
Partie 2: Planification et pratiques Kommunikationsverkabelung -
d'installation à l'intérieur des bâtiments Teil 2: Installationsplanung und
Installationspraktiken in Gebäuden

This amendment A1 modifies the European Standard EN 50174-2:2009; it was approved by CENELEC on
2011-01-03. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment 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 amendment 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, Croatia, 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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50174-2:2009/A1:2011 E

Foreword
This amendment to the European Standard EN 50174-2:2009 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 amendment A1 to
EN 50174-2:2009 on 2011-01-03.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.
The following dates were fixed:
– latest date by which the amendment has to be implemented

at national level by publication of an identical

national standard or by endorsement
(dop) 2012-01-03
– latest date by which the national standards conflicting

with the amendment have to be withdrawn
(dow) 2014-01-03
This amendment introduces:
– a new Clause 10 with specific requirements for installation of cabling in homes;
– a new Clause 11 with specific requirements for installation of cabling in data centres;
– detailed requirements and recommendations for installation of cabling in office (including commercial)
(see Clause 8) premises and in industrial premises (see Clause 9);
– some technical and editorial modifications to the other clauses.

– 3 – EN 50174-2:2009/A1:2011
Text of A1 to EN 50174-2:2009
Introduction
Replace Table 1 with:
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
6. Bonding networks 4: Structure 4: Requirements for 4: Requirements for
specifying installations specifying installations
5: Channel performance
of information of information
technology cabling technology cabling
7: Cable requirements
5: Requirements for
8: Connecting hardware
installers of information
requirements
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
power supply cabling power supply cabling
cords and jumpers
7: Electricity distribution 8: Office (commercial)
A: Link performance systems and lightning premises
limits protection
9: Industrial premises
10: Homes
11: Data centres
and and
EN 50174-3 EN 50174-3
and and
(for equipotential (for equipotential
bonding) bonding)
EN 50310 EN 50310
and
EN 50346
4: General requirements
5: Test parameters for
balanced cabling
6: Test parameters for
optical fibre cabling
1.1 Scope
Replace “mains power” with “power supply” in bullet 2 (English version only).
th
Replace 5 paragraph with:
This standard is applicable to certain hazardous environments. It does not exclude additional requirements
which are applicable in particular circumstances, defined by e.g. electricity supply and electrified railways.
1.2 Conformance
Replace bullet g) with:
g) local regulations, including safety, that are more stringent than the requirements listed in a) to f) shall be
met.
2 Normative references
Add the following references:
EN 50090-9-1:2004, Home and Building Electronic Systems (HBES) – Part 9-1: Installation requirements –
Generic cabling for HBES Class 1 Twisted Pair
EN 50491 series, General requirements for Home and Building Electronic Systems (HBES) and Building
Automation and Control Systems (BACS)
1)
EN 50491-6-1 , Home and Building Electronic Systems (HBES) and Building Automation and Control
Systems (BACS) - Part 6-1: Installation requirements
EN 60670 series, Boxes and enclosures for electrical accessories for household and similar fixed electrical
installations
Delete reference to IEC 61784-4.
3 Terms, definitions and abbreviations
3.1 Terms and definitions
Replace in existing 3.1.11 and 3.1.15 “mains power” with “power supply” (English version only).
Insert the following definitions and renumber existing definitions accordingly:
3.1.2
co-hosting data centre
data centre in which multiple customers are provided with access to network(s), servers and storage
equipment on which they operate their own services/applications
NOTE Both the information technology equipment and the support infrastructure of the building are provided as a service by the data
centre operator.
3.1.3
co-location data centre
———————
1)
In preparation.
– 5 – EN 50174-2:2009/A1:2011
data centre in which multiple customers locate their own network(s), servers and storage equipment
NOTE The support infrastructure of the building (such as power distribution and environmental control) is provided as a service by
the data centre operator.
3.1.5
data centre
building or space, whose primary function is to accommodate equipment that processes, delivers and/or
stores information
NOTE A data centre can consist of multiple spaces with specific functions to support the primary function.
3.1.8
enterprise data centre
data centre that is operated by an enterprise which has the sole purpose of the delivery and management of
services to its employees and customers
3.1.9
entrance room
space within, or at the boundary of, a building housing the demarcation point where facilities owned by
external service providers interface with the premises cabling
NOTE For generic cabling in accordance with EN 50173-5, the demarcation point is the external network interface (ENI) and the data
centre cabling at that point is the network access cabling.
3.1.10
equipment connection space
space within a home that corresponds to the installation space IS6 of EN 50491-6-1 and that may house the
outlets (TO, BO, MATO, CO) of EN 50173-4 together with attached equipment
3.1.14
home entrance
space at the boundary of a home that may house the interface(s) between the home networks and external
networks provided to the home and that demarcate the administration and maintenance of the two networks
3.1.16
junction box
space within a home that corresponds to the installation space IS5 of EN 50491-6-1 and housing a closure,
typically in accordance with the EN 60670 series, designed to allow cables to be routed between pathway
systems
3.1.17
local distribution space
space within a home that corresponds to the installation space IS5 of EN 50491-6-1 and that may house the
area connection point (ACP) of EN 50173-4
3.1.20
multi-tenant premises
premises containing multiple homes that have each their own home entrance space but share building
entrance facilities (BEF) and associated distribution spaces
3.1.21
network operator data centre
data centre that has the primary purpose of the delivery and management of broadband services to the
operators’ customers
3.1.24
primary distribution space
space within a home that corresponds to the installation space IS4 of EN 50491-6-1 and that may house the
home distributor (secondary home distributor) of EN 50173-4 and associated equipment

3.1.28
semi-detached house
residence of a single family within a building containing two single-family houses where access to external
service provision is shared
3.1.29
single-family house
residence of a single family within which access to the home entrance space is limited to dweller of the
house
3.2 Abbreviations
Insert the following additional abbreviations:
CPL Central Patching Location
HBES Home and Building Electronic System
HE Home Entrance
SHD Secondary Home Distributor
UPS Uninterruptible Power Supply
ZPL Zone Patching Location
4 Requirements for planning installations of information technology cabling
4.1.2 Mains power cabling
Replace title with:
4.1.2 Power supply cabling
4.1.7 Closures
Replace “mains power” with “power supply” (6 places).
4.1.8.2 External cables containing flammable materials
Replace subclause with:
Information technology cables that do not comply with the minimum recommended performance
requirements of EN 60332-1-2 shall either be:
a) terminated inside the building, within 2 m (unless an alternative distance if specified by local regulations)
of the point of internal penetration of the external fire barrier (e.g. floor/ceiling/wall);
or
b) any length exceeding 2 m (unless an alternative distance if specified by local regulations) is installed
within trunking or conduit that is considered as a fire barrier in accordance with local fire regulations.
NOTE This also applies where the cable has to pass through a space between two external fire barriers within a building.
4.1.9 Termination points
Replace “mains power” with “power supply” in two places.

– 7 – EN 50174-2:2009/A1:2011
4.3.1 Cable segregation
nd
Replace “mains power” with “power supply” in 2 paragraph.
4.4 Pathway systems
Insert new heading:
4.4.1 Requirements
st
Amend 1 paragraph to read:
Pathways, entry points to the pathways and the pathway systems selected shall ensure cables are able to be
installed and, where appropriate, fixed in accordance with the applicable minimum bend radius (during
installation, during operation – static and during operation – dynamic). This may be achieved by the use of
pre-fabricated curved corners, drop-outs, radius limiters or other means. Where multiple cable types are
involved, the largest minimum bend radius shall apply.
Insert new subclause
4.4.2 Recommendations
During initial planning, the initial quantity of cables should not use more than 40 % of the usable cross-
sectional area within the chosen pathway system subject to the following definition for useable cross-
sectional area:
a) for uncovered pathway systems and cable management systems (e.g. tray or basket), cables are not
installed above the sidewalls (note electromagnetic screening performance of the selected cable
management system may require modified criteria - see Clause 6);
b) bends in the pathway systems may restrict the useable cross-sectional area dependent upon the
specified bend radii of the cable to be installed;
c) for non-enclosed pathway systems to which cables are to be attached or supported by (e.g. messenger/
catenary wires or designated routes) the cross-sectional area shall be considered to be the minimum
available area surrounding the pathway system.
4.5.1 Requirements
Delete text from “Non-metallic cable management systems.” to “ • optical fibre cabling” and from “The
th th th
planning (selection and location) …” to “… installed above the sidewalls” (i.e. 7 ,8 and 10 paragraphs).
4.5.2 Recommendations
Insert the following text at the end of existing text:
Non-metallic cable management systems are neutral products from the electromagnetic point of view. They
do not provide electromagnetic screening t
...