SIST HD 60364-5-52:2011
Low-voltage electrical installations -- Part 5-52: Selection and erection of electrical equipment - Wiring systems
Low-voltage electrical installations -- Part 5-52: Selection and erection of electrical equipment - Wiring systems
Part 5-52 of IEC 60364 deals with the selection and erection of wiring systems.
NOTE 1 This standard also applies in general to protective conductors, while IEC 60364-5-54 contains further requirements for those conductors.
NOTE 2 Guidance on Part 5-52 of IEC 60364 is given in IEC 61200-52.
Errichten von Niederspannungsanlagen - Teil 5-52: Auswahl und Errichtung elektrischer Betriebsmittel - Kabel- und Leitungsanlagen
Installations électriques à basse-tension -- Partie 5-52: Choix et mise en oeuvre des matériels électriques - Canalisations
La CEI 60364-5-52:2009 traite du choix et de la mise en oeuvre des canalisations. Cette troisième édition annule et remplace la deuxième édition, publiée en 2001. Elle constitue une révision technique. Les principaux changements par rapport à l'édition précédente sont les suivants: - Le paragraphe 521.4 apporte des changements mineurs aux canalisations préfabriquées et aux systèmes de conducteurs préfabriqués. - Le paragraphe 523.6 apporte des changements mineurs au dimensionnement des câbles en présence de courants harmoniques. - Un nouveau paragraphe 523.9 a été introduit; il concerne les câbles monoconducteurs à gaine métallique. - L'Article 525 insère des modifications de la valeur maximale de la chute de tension admissible entre l'origine de l'installation et l'équipement de l'utilisateur; il convient que celle-ci ne soit pas supérieure à celle donnée dans l'annexe correspondante. - L'Article 526 apporte des changements mineurs aux connexions électriques, y compris des restrictions relatives à la vérification des connexions et des notes complémentaires. - L'Article 528 introduit des exigences supplémentaires concernant le voisinage des câbles enterrés de réseaux d'énergie et de communications.
- L'Article 529 apporte des changements mineurs au choix et à la mise en uvre des canalisations en fonction de la maintenance, comprenant le nettoyage.
Nizkonapetostne električne inštalacije - 5-52. del: Izbira in namestitev električne opreme - Inštalacijski sistemi
5-52. del IEC 60364 obravnava izbiro in namestitev inštalacijskih sistemov.
OPOMBA 1: Ta standard velja tudi na splošno za zaščitne prevodnike, medtem ko IEC 60364-5-54 vsebuje nadaljnje zahteve za te prevodnike.
OPOMBA 2: Vodilo o delu 5-52 IEC 60364 je navedeno v IEC 61200-52.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST HD 60364-5-52:2011
01-maj-2011
1DGRPHãþD
SIST HD 384.5.52 S1:2000
SIST HD 384.5.52 S1:2000/A1:2000
SIST HD 384.5.523 S2:2002
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO ,]ELUDLQQDPHVWLWHYHOHNWULþQH
RSUHPH,QãWDODFLMVNLVLVWHPL
Low-voltage electrical installations -- Part 5-52: Selection and erection of electrical
equipment - Wiring systems
Installations électriques à basse-tension -- Partie 5-52: Choix et mise en oeuvre des
matériels électriques - Canalisations
Ta slovenski standard je istoveten z: HD 60364-5-52:2011
ICS:
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-5-52:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST HD 60364-5-52:2011
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SIST HD 60364-5-52:2011
HARMONIZATION DOCUMENT
HD 60364-5-52
DOCUMENT D'HARMONISATION
February 2011
HARMONISIERUNGSDOKUMENT
ICS 13.260; 91.140.50 Supersedes HD 384.5.52 S1:1995 + A1:1998 + corr. Sep.1998, HD 384.5.523 S2:2001
English version
Low-voltage electrical installations -
Part 5-52: Selection and erection of electrical equipment -
Wiring systems
(IEC 60364-5-52:2009, modified + corrigendum Feb. 2011)
Installations électriques à basse-tension - Errichten von Niederspannungsanlagen -
Partie 5-52: Choix et mise en oeuvre des Teil 5-52: Auswahl und Errichtung
matériels électriques - elektrischer Betriebsmittel -
Canalisations Kabel- und Leitungsanlagen
(CEI 60364-5-52:2009, modifiée + (IEC 60364-5-52:2009, modifiziert +
corrigendum Feb. 2011) corrigendum Feb. 2011)
This Harmonization Document was approved by CENELEC on 2011-01-24. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this
Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on
application to the Central Secretariat or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
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. HD 60364-5-52:2011 E
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HD 60364-5-52:2011 - 2 -
Foreword
The text of the International Standard IEC 60364-5-52:2009, prepared by IEC TC 64, Electrical
installations and protection against electric shock, together with common modifications prepared by the
Technical Committee CENELEC TC 64, Electrical installations and protection against electric shock, was
submitted to the formal vote and was approved by CENELEC as HD 60364-5-52 on 2011-01-24.
This European Standard supersedes HD 384.5.52 S1:1995 + A1:1998 and HD 384.5.523 S2:2001.
The main changes with respect to HD 384.5.52 S1:1995 + A1:1998 are as follows:
– Subclause 521.4 introduces minor changes with regard to busbar trunking systems and powertrack
systems.
– Subclause 523.6 introduces minor changes with regard to the sizing of cables where harmonic
currents are present.
– A new sublause 523.9 concerning single-core cables with a metallic covering has been introduced.
– Clause 525 introduces changes in the maximum value of voltage drop permitted between the origin of
the consumer's installation and the equipment which should not be greater than that given in the
relevant annex.
– Clause 526 introduces minor changes to electrical connections including additional exceptions for
inspection of connections and additional notes.
– Clause 528 introduces additional requirements with regard to proximity of underground power and
telecommunication cables.
– Clause 529 introduces minor changes to selection and erection of wiring systems in relation to
maintainability, including cleaning.
The following dates were fixed:
– latest date by which the existence of the HD
has to be announced at national level (doa) 2011-07-24
– latest date by which the HD has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2012-01-24
– latest date by which the national standards conflicting
with the HD have to be withdrawn (dow) 2014-01-24
__________
Endorsement notice
The text of the International Standard IEC 60364-5-52:2009 was approved by CENELEC as a
Harmonization Document with agreed common modifications as given below.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60332-3 series NOTE Harmonized in EN 60332-3 series (partially modified).
IEC 60332-3-24 NOTE Harmonized as EN 60332-3-24.
IEC 60364-4-43:2008 NOTE Harmonized as HD 60364-4-43:2010 (modified).
IEC 60364-5-51:2005 NOTE Harmonized as HD 60364-5-51:2009 (modified).
IEC 60364-7-715 NOTE Harmonized as HD 60364-7-715.
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IEC 61000 series NOTE Harmonized in EN 61000 series (partially modified).
IEC 61386-24 NOTE Harmonized as EN 61386-24.
IEC 61535 NOTE Harmonized as EN 61535.
IEC 62305 series NOTE Harmonized in EN 62305 series (partially modified).
COMMON MODIFICATIONS
521.9.1
Add the following note:
NOTE Insulated flexible conductors or cores according to HD 516 may also be used as fixed installation.
528.2
Add the following new paragraph:
"In the case of proximity between cable distribution systems for radio and television signals and power
line systems, EN 50083 should be considered."
528.2
Add the following note:
NOTE For the connection of combined socket-outlets for telecommunication (also aerial) and power line systems, EN 41003 should
be considered.
Annex A - Table A.52.2 – Erection of wiring systems
Delete Table A.52.2.
Annex B - Table B52-18 – Current-carrying capacities
Table B.52.18, right column, line Number of circuits 16, change from 0.38 to 0.68.
Annex D - Formulae to express current-carrying capacities
Delete Annex D.
Add Annexes ZA to ZC below.
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HD 60364-5-52:2011 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60228 - Conductors of insulated cables EN 60228 -
IEC 60287 Series Electric cables - Calculation of the current - -
rating
IEC 60287-2-1 - Electric cables - Calculation of the current - -
rating -
Part 2-1: Thermal resistance - Calculation of
thermal resistance
IEC 60287-3-1 - Electric cables - Calculation of the current - -
rating -
Part 3: Sections on operating conditions -
Section 1: Reference operating conditions and
selection of cable type
IEC 60332-1-1 - Tests on electric and optical fibre cables EN 60332-1-1 -
under fire conditions -
Part 1-1: Test for vertical flame propagation
for a single insulated wire or cable - Apparatus
IEC 60332-1-2 - Tests on electric and optical fibre cables EN 60332-1-2 -
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 60364-1 (mod) 2005 Low-voltage electrical installations - HD 60364-1 2008
Part 1: Fundamental principles, assessment of
general characteristics, definitions
IEC 60364-4-41 2005 Low-voltage electrical installations - HD 60364-4-41 2007
(mod) Part 4-41: Protection for safety - Protection + corr. July 2007
against electric shock
IEC 60364-4-42 - Low voltage electrical installations - HD 60364-4-42 -
Part 4-42: Protection for safety - Protection
against thermal effects
IEC 60364-5-54 - Electrical installations of buildings - HD 60364-5-54 -
(mod) Part 5-54: Selection and erection of electrical
equipment - Earthing arrangements,
protective conductors and protective bonding
conductors
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Publication Year Title EN/HD Year
IEC 60439-2 - Low-voltage switchgear and controlgear EN 60439-2 -
assemblies -
Part 2: Particular requirements for busbar
trunking systems (busways)
IEC 60449 - Voltage bands for electrical installations of HD 193 S2 -
buildings
IEC 60502 Series Power cables with extruded insulation and - -
their accessories for rated voltages from 1 kV
(Um = 1,2 kV) up to 30 kV (Um = 36 kV)
IEC 60529 - Degrees of protection provided by enclosures - -
(IP Code)
IEC 60570 (mod) - Electrical supply track systems for luminaires EN 60570 -
IEC 60702 Series Mineral insulated cables and their EN 60702 -
terminations with a rated voltage not
exceeding 750 V
IEC 60947-7 Series Low-voltage switchgear and controlgear - EN 60947-7 Series
Part 7: Ancillary equipment
IEC 60998 Series Connecting devices for low-voltage circuits EN 60998 Series
for household and similar purposes
IEC 61084 Series Cable trunking and ducting systems for - -
electrical installations
IEC 61386 Series Conduit systems for cable management EN 61386 Series
IEC 61534 Series Powertrack systems EN 61534 Series
IEC 61537 - Cable management - Cable tray systems and EN 61537 -
cable ladder systems
ISO 834 Series Fire-resistance tests - Elements of building - -
construction
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HD 60364-5-52:2011 - 6 -
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions.
NOTE If it affects harmonization, it forms part of the Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are normative,
for other countries they are informative.
Country Clause Special national condition
In Norway the following additional requirements apply:
Norway 523.1
Special requirement may apply in Norway due to national building practice and
the extended use of insulation materials in building walls.
Germany
521.11 In Germany additional requirements apply (see annex to German Special
National Condition on Clause 521.x)
In Germany the following additional requirements apply:
521.12
"521.x Inherently short-circuit proof and inherently earth-fault-proof wiring
Where protective devices for the protection in case of short-circuit in
accordance with 473.2.2.1 of IEC 60364 are not used, cables and conductors
shall be laid inherently short-circuit proof and inherently earth-fault-proof.
The following types of wiring are regarded as inherently short-circuit proof and
inherently earth-fault proof:
a) Conductor arrangements where contact between the conductors and contact
with earthed parts are prevented and where no short-circuit is to be expected
due to external influences (e.g. falling parts);
b) Arrangement consisting of single-core cables, e.g. in accordance with
IEC 60502, single-core non-metallic -sheathed cables in accordance with
IEC 60227-4 or single-core rubber-insulated and sheathed flexible cables in
accordance with IEC 60245-4;
c) Cables and rubber-insulated and sheathed flexible cables laid so that they
are accessible but not in the vicinity of combustible materials and where the
risk of mechanical damage is prevented.
d) Conductor arrangement consisting of single-core non-sheathed cables of
suitable type of construction (e.g. special rubber-insulated cables in
1)
accordance with IEC 60XXX , rated voltage U /U at least 1,8/3 kV or
0
equivalent).
An arrangement of cables and insulated conductors which could burn out
without endangering their environment (e.g. cables in ground) is considered as
equivalent to inherently short-circuit proof and inherently earth-fault-proof wiring
with regard to safety."
1)
In preparation.
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Country Clause Special national condition
521.13 In Germany the following additional requirements apply:
"521.13 Accessories
Boxes and enclosures for accessories, e.g. connecting boxes for housing
terminals, socket-outlets or switches shall comply with the requirements of
EN 60670.
Boxes and enclosures intended to be installed in concrete or in hollow walls,
shall have the following markings according to EN 60670-1 on the boxes and
enclosures or provided by the manufacturer on the smallest package unit or in
the instructions of the manufacturer
- for use in concrete: symbol 90 °C;
- for use in hollow walls: symbol H.
GP-enclosures according to EN 60670-24 (under preparation) are not allowed
to be installed in Germany.
Socket outlet-systems which accept the simultaneous connection of more than
one plug in the interface of one socket outlet are not allowed in Germany.
521.6 In Germany and the Netherlands in the case of basic-insulated conductors in
conduit systems, cable trunking systems and cable ducting systems, only the
conductors of one main circuit, including the auxiliary circuits associated with
this main circuit, may be laid in conduit or in single-channel trunking or in one
duct of a multi-channel trunking, except in electrical and enclosed operating
areas. The uncut conductors of several circuits may, however, be fed through
common through-run boxes.
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HD 60364-5-52:2011 - 8 -
Country Clause Special national condition
521.7
In Germany the following additional requirements are applicable:
under certain circumstances, for ease of installation, the conductor may be
Class 5 to EN 60228, in which case the designatory suffix under HD 361 is
given by "-K".
The use of a Class 5 conductor designated "-K" does not indicate that the cable
is suitable for repeated flexing.
Flexible cables or cords (except for those heavy duty types used as fixed
installations in temporary buildings) should not be used as fixed wiring unless
contained in an enclosure affording mechanical protection, except when used
as the final connection to fixed equipment. In which case they should be of, at
least, the 'ordinary' type.
Flexible cables or cords should not be placed under carpets or other floor
coverings, where there is
a) any risk of thermal insulating effects, leading to excessive temperature
rise (see 5.3.1, a));
b) any risk of damage due to furniture or equipment resting on them or traffic
passing over them.
When flexible cables are required for use outdoors, whether of temporary or
permanent usage, reference should be made to Table 2A and 2B of this HD to
determine their suitability for such usage.
PVC flexible cables or cords are unsuitable for permanent use outdoors. Neither
should those that have a temporary designation be used in that manner
outdoors in adverse conditions, e.g. at temperatures below those given in
Table 4A, column 11.
In the case of soft soldered joints or terminations the limiting temperature for the
conductor under short circuit conditions is reduced to 160 °C. Account of this
limitation should be taken in selecting and operating cables.
Tinned copper conductors should not be used at temperatures above 200 °C
because of the risk of mutual adhesion.
Where the limiting temperature given in Column 10 of Tables 3A, 3B, 4A and 4B
is such that the temperature of the surface of the cable is liable to exceed 50 °C,
the cable should be so located or guarded as to prevent contact of persons or
animals therewith. Cable surface temperatures above this can cause involuntary
reaction in the event of contact with exposed skin. Account should be taken of
these possibilities in the selection and use of cables.
527 In Germany, in cable tunnels, cable ducting and other places with increased
density of installed cables the installation of fire detectors sensitive to heat
radiation and smoke is required. In extended wiring system installations the
possibility to use mobile fire extinguishers is required. The use of a stationery
fire extinguisher installation is recommended in case of extended wiring
systems to which gaining access is difficult. In cable tunnels every 100 m a
partition as fire resisting section should be provided and every cable breaking
through should be sealed by a suitable and agreed fire resisting provision.
Accessible cable tunnels and ducts shall be erected with a sufficient number of
possibilities for gaining access in case of fighting a fire hazard, e.g. by easy
removable covers, and devices for smoke removal shall be provided. Where fire
protection seals with an automatic closing function and fire resisting capability
are applied such seals shall be activated at once in case of a fire hazard.
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Country Clause Special national condition
522.4.1 In Germany, in hollow wall installations boxes and enclosures with a protection
degree not less than IP30 shall be used.
522.8.1.1 In Germany the following additional requirements apply:
Add the following text:
The tension applied to a cable should not exceed the values of tensile stress
per conductor given below. This is subject to a total maximum tensile force of
1 000 N unless otherwise agreed by the cable manufacturer.
50 N/mm² for non flexible cables during installation.
15 N/mm² for flexible cables, under static tensile stress and for non flexible
cables in service in fixed circuits.
In circumstances where a stress exceeding the above values would result, a
separate stress bearing member or device should be used. The method of
attaching such a member or device to the cable should be such that the cable is
not damaged.
In circumstances where flexible cables are under dynamic stress (including
those due to inertia, e.g. reeling drums) the permissible tensions or fatigue life
should be agreed between the design engineer and the cable manufacturer.
Cables which are installed vertically, without intermediate support, which are
inaccessible and unlikely to be moved or disturbed, should be supported at the
top of the run such that the internal radius of the resultant bend is not less than
the appropriate minimum bending radius for normal use according to Table 6(a),
or for fixed installation according to Tables 6(b) and 6(c). The unsupported
vertical length of such runs should not exceed 5 m.
The rated voltage of a cable is the reference voltage for which the cable is
designed and which serves to define the electrical tests.
The rated voltage is expressed by the combination of two values U /U,
o
expressed in volts:
U being the r.m.s. value between any insulated conductor and 'earth' (metal
o
covering of the cable or the surrounding medium);
U being the r.m.s. value between any two phase conductors of a multicore
cable or of a system of single core cables.
In an alternating current system, the rated voltage of a cable shall be at least
equal to the nominal voltage of the system for which it is intended. This
condition applies both to the value U and to the value U.
o
In a direct current system, the nominal voltage of the system shall be not higher
than 1,5 times the rated voltage of the cable.
NOTE The operating voltage of a system may permanently exceed the nominal voltage of such a
system by 10 %.
522.8.8 In Germany the standards DIN 18015-3 and DIN 1053-1 have to be considered.
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Country Clause Special national condition
522.8.9 In Germany, in hollow wall installations boxes and enclosures with cable
retention shall be used
In Germany the following additional requirements apply:
522.8.10
“Cable laid in the ground shall be laid at least at 0,6 m below ground level but at
least 0,8 m below the carriageway of streets.
For smaller installation depths the cable shall be protected by other means, e.g.
wiring in suitable conduits."
523.3 In Germany in addition the 24 h load diagram has to be taken into consideration
527 In Germany there are specific requirements on fire protection in some areas.
527.2.4 In Germany 527.2.4 is not applicable.
527.2.5 In Germany, seals for cable penetrations shall be approved by the German
Institute for constructional engineering (Deutsches Institut für Bautechnik DIBT).
Annex A In Germany additional requirements apply (see annex to German Special
National Condition on Table A52-3)
Table
A.52.3
Annex D In Germany Annex D does not apply.
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Country Clause Special national condition
In Germany the following additional requirements apply:
A) Wiring in concrete;
B) 1 cable and conductor.
The cables and conductors listed under a) to c) are permissible.
a) Aderleitungen single-core conductors, e.g. H07V…, in conduit.
The conduit for feeding through or joining single-core conductors, e.g. at the
intersection of wall and ceiling structural elements, shall be fed through in
insulating boxes according to DIN EN 60670 (VDE 0606)-series (some
countries note and SNC in CENELEC).
When using single-core cable it shall be ensured that the conduit and boxes
form an unbroken sealed system.
b) Sheathed conductors, e.g. NYM, according to DIN VDE 0250-204
(VDE 0250-204); in conduit or recess clearances.
c) Cables, e.g. NYY, according to DIN VDE 0276-603 (VDE 0276-603).
C) 2 Accessories
Boxes for appliances, appliance connection boxes, luminaire connection boxes
and junction boxes shall be suitable for installation in concrete. They shall
comply with DIN EN 60670 (VDE 0606) and shall be marked with the symbol B
according to DIN 30600 Reg. No. 1716.
D) Installation of cables in not accessible underground ducts and in protective
conduits burried in the ground
In not accessible underground ducts outside of buildings only cable or rubber-
sheathed cable NSSHÖU according to DIN VDE 0250-812 (VDE 0250-812),
trailing cables according to DIN VDE 0250-813 (VDE 0250-813) or similar types
shall be installed.
In protective conduits burried in the ground also sheathed conductors NYM
according to DIN VDE 0250-204 “(VDE 250-204) and plain lead-covered cable
DIN VDE 0250-210 (VDE 0250-210) are allowed, if the cables remain
accessible and exchangeable and the conduit is mechanically fixed, protected
against the ingress of water and ventilated.
NOTE This type of wiring should be restricted to exceptional cases and short distances, e.g. up to
5 m; the type of wiring according to 522.8.10 should be given preference.
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HD 60364-5-52:2011 - 12 -
Country Clause Special national condition
Annex ZB
In Germany the following additional requirements apply:
“Flat webbed house wires in accordance with DIN VDE 0250, Part 201 may be
used if the following requirements are met:
a) Flat webbed house wires according to DIN VDE 0250, Part 201 (NYIF.
NYIFY) may only be installed in dry rooms and only in or under plaster. They
shall be covered with plaster along their entire length.
NOTE 1 The use of flat webbed house wires may be restricted in special specifications.
NOTE 2 The insulation of cores in flat conductors is about half as thick as the insulation of single-
core conductors. The covering is primarily intended to maintain the distances between the cores in
order to ensure the permissible heat removal based on the maximum carrying current and the
additional mechanical protection of the conductor by the plaster covering. In general, this is ensured
by a crack-resistant plaster covering with a plaster thickness of about 4 mm.
b) If flat webbed house wires are installed in cavities in ceilings or walls
consisting of concrete, stone or similar non-combustible material, it is not
necessary to cover them with plaster in accordance with item a).
c) Even when covered with plaster, flat webbed house wires may not be laid on
combustible construction materials (see DIN 4102, Part 1), e.g. wood.
d) Flat webbed house wires shall not be bunched. Collecting flat webbed house
wires together at the inlet points of electrical equipment, e.g. distribution
boards, is not considered as bunching.
e) Flat webbed house wires may only be fixed using means and methods which
will ensure that the insulation is not damaged or deformed.
NOTE 3 Means for fixing without damage are, e.g. :
- gypsum plaster; or
- clamps matching the shape of the wires and made of insulating material or of metal with
insulating layer; or
- sticking; or
- nailing with suitable nails with insulating washers.
f) Flat webbed house wires shall not be installed under plaster board unless
these boards are attached entirely with plaster.
g) Flat webbed house wires shall not be installed immediately on or under wire
netting, metal mesh or similar.
h) Flat webbed house wires may only be joined in installation boxes in
accordance with DIN EN 60670-1 (VDE 0606-1) made of insulating material.
Netherlands
521.6 In Netherlands in the case of basic-insulated conductors in conduit systems,
cable trunking systems and cable ducting systems, only the conductors of one
main circuit, including the auxiliary circuits associated with this main circuit, may
be laid in conduit or in single-channel trunking or in one duct of a multi-channel
trunking, except in electrical and enclosed operating areas. The uncut
conductors of several circuits may, however, be fed through common through-
run boxes.
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Country Clause Special national condition
Ireland
522.6.2 In Ireland concealed wiring must be protected against damage caused by
penetration by fixings and drills, by earthed metal enclosures or integral
screens, except in the following areas: 150 mm horizontally from a corner,
150 mm vertically from a ceiling, straight vertical or horizontal run to a point,
accessory or switchgear. In such cases, the wiring must be at least 50 mm from
the reverse side of the wall.
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HD 60364-5-52:2011 - 14 -
Country Clause Special national condition
Denmark
522.8.10 In Denmark the following applies: The requirements are not required for cables
with a rated voltage not exceeding 50 V ac or 120 V d.c. Cables shall be buried
at least 0,35 m under terrain. Cables buried less than 0,7 m under terrain shall
be protected by conduits, U-profiles or sheets. Cables buried more than 0,7 m
under terrain shall be without additional mechanical protection, when a marking
band is placed approximately 0,2 m above the cable. By more than one cable
with less than 0,2 m between the outer cables only one marking band is
required. Cables coming from the soil up in free air shall be mechanically
protected as well under the terrain as above the terrain.
NOTE Conduits or galvanized iron, steel or plastic conduits in accordance to DS 2119 for a working
pressure of 0,6 MPa can be used for protection.
528.1 In Denmark, the following requirement applies: Installations without connection
to the low-voltage installation and which are installed, supervised and
maintained by other than skilled persons shall be separated from the low-
voltage installations in a way that is possible to work on them without
dismantling the low-voltage installation.
Table In Denmark, the following applies – Where the current in a circuit of a group not
C52-3 exceeds 70 % of the current carrying capacity in accordance to Table C52-3
multiplied with an even correction factor for ambient temperature the following is
allowed:
The current carrying capacity for the circuit does not need to be multiplied
with a reduction factor for groups.
The circuit is not counted together with other circuits when numbers of
circuits are counted for determination of the reduction factor. Where the
current in all circuits in a group not exceeds 75 % of the current carrying
capacity in accordance with Table C52-3
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