SIST EN 1648-2:2005

SLOVENSKI STANDARD
SIST EN 1648-2:2005
01-april-2005
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Leisure accommodation vehicles - 12 V direct current extra low voltage electrical
installations - Part 2: Motor caravans
Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für DC 12 V - Teil 2: Motorcaravans
Véhicules habitables de loisirs - Installations électriques a tres basse tension de 12 V en
courant continu - Partie 2: Autocaravanes
Ta slovenski standard je istoveten z: EN 1648-2:2004
ICS:
43.040.10 (OHNWULþQDLQHOHNWURQVND Electrical and electronic
RSUHPD equipment
43.100 Osebni avtomobili. Bivalne Passenger cars. Caravans
prikolice in lahke prikolice and light trailers
SIST EN 1648-2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1648-2:2005

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SIST EN 1648-2:2005



EUROPEAN STANDARD
EN 1648-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2004
ICS 43.100; 43.040.10 Supersedes EN 1648-2:1997
English version
Leisure accommodation vehicles - 12 V direct current extra low
voltage electrical installations - Part 2: Motor caravans
Véhicules habitables de loisirs - Installations électriques à Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für
très basse tension de 12 V en courant continu - Partie 2: DC 12 V - Teil 2: Motorcaravans
Autocaravanes
This European Standard was approved by CEN on 14 October 2004.

CEN 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 CEN 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 CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.

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




EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1648-2:2004: E
worldwide for CEN national Members.

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SIST EN 1648-2:2005
EN 1648-2:2004 (E)
Contents
Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Power supply.5
4.1 General.5
4.2 Auxiliary batteries.5
4.3 Other sources of supply .6
4.4 Protective measures.7
5 Wiring.7
5.1 Cable and fixed wiring cross-sectional areas.7
5.2 Fixed wiring.7
6 Overcurrent protection.8
6.1 Protection of positive conductors .8
6.2 Types of device.8
6.3 Installation of fuses .8
6.4 Prohibited locations .8
7 Installation of appliances.9
7.1 General.9
7.2 Selection and connection of appliances .9
7.3 Socket outlets .9
7.4 Battery charger .9
7.5 External lights .9
7.6 Voltage drop.9
8 User's Handbook .10
Annex A (informative) Relation of cable cross-sectional area, current flow and cable length for fixed
wiring installations .11
Bibliography .13


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SIST EN 1648-2:2005
EN 1648-2:2004 (E)
Foreword
This document (EN 1648-2:2004) has been prepared by the Technical Committee CEN /TC 245, “Leisure
accommodation vehicles”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by
June 2005.
This European Standard supersedes EN 1648-2:1997.
The requirements of relative ISO/IEC and CENELEC publications were taken into consideration during the
preparation of this European Standard.
This European Standard is one of a series covering the habitation aspects of leisure accommodation vehicles.
Requirements for 12 V direct current extra low voltage electrical installations for caravans are specified in
EN 1648-1.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-
tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto-
nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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SIST EN 1648-2:2005
EN 1648-2:2004 (E)
1 Scope
This document specifies safety, health and functional requirements for 12 V direct current (DC) extra low voltage
(ELV) electrical installations for habitation aspects of motor caravans.
It applies only to installations which are electrically connected with the electrical installation of the base vehicle or
which can be electrically connected with it by means of change-over devices.
This document also specifies the ELV output requirements of low voltage (LV) equipment that may be used to
provide an ELV supply but it does not specify safety, technical and functional requirements for LV appliances and
installations. Requirements for LV installations are specified in HD 384-7-708 S1.
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 1646-1, Leisure accommodation vehicles — Motor caravans — Part 1: Habitation requirements relating to
health and safety.
EN 13878:2003, Leisure accommodation vehicles — Terms and definitions.
EN 50102, Degrees of protection provided by enclosures for electrical equipment against external mechanical
impacts (IK code).
EN 60335-2-29, Safety of household and similar electrical appliances — Part 2: Particular requirements for battery
chargers (IEC 60335-2-29:1994, modified).
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 6052:1989).
HD 21.1 S4, Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation—
Part 1: General requirements.
HD 21.3 S3, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V — Part 3: Non-
sheathed cables for fixed wiring (IEC 60227-3:1993, modified).
HD 21.4 S2, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V — Part 4: Sheated
cables for fixed wiring.
HD 21.5 S3, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible
cables (cords) (IEC 60227-5:1979, modified).
HD 22.1 S4, Cables of rated voltages up to and including 450/750 V and having cross-linked insulation –
Part 1: General requirements.
HD 22.4 S3, Rubber insulated cables of rated voltages up to and including 450/750 V— Part 4: Cords and flexible
cables (IEC 60245-4:1994, modified).
ISO 6309, Fire protection — Safety signs.
ISO 6722, Road vehicles — 60 V and 600 V single-core cables — Dimensions, test methods and requirements.
ISO 8820-1, Road vehicles — Fuse-links — Part 1: Definitions and general test requirements.
ISO 8820-3, Road vehicles — Fuse-links — Part 3: Fuse-links with tabs (blade type).
ISO 8820-4, Road vehicles — Fuse-links — Part 4: Fuse-links with female contacts (type A) and bolt-in contacts
(type B) and their test fixtures.
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SIST EN 1648-2:2005
EN 1648-2:2004 (E)
3 Terms and definitions
For the purposes of this document the terms and definitions given in EN 13878:2003 apply.
4 Power supply
4.1 General
The power supply shall be a nominal DC 12 V obtained from an auxiliary battery, except in the case of a motor
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caravan where the overall length multiplied by the overall width does not exceed 8,5 m plan area. In this case it is
permissible to use only the base vehicle battery.
The supply of the auxiliary battery shall be obtained from the electrical installation of the base vehicle or one or
more of the following sources:
a) Battery charger (see 7.4);
Where the charger is combined with a transformer/rectifier unit fixed within the motor caravan, then individual
items of current using equipment can also be supplied with electricity directly from this rectifier unit.
b) Generator that is driven by any form of energy (see 4.3);
c) solar energy cells (see 4.3).
It shall be ensured that the auxiliary battery will be automatically disconnected from the 12 V power supply of the
base vehicle when the engine of the base vehicle is turned off.
If several sources of supply are used it shall be ensured that there is no unfavourable interaction.
4.2 Auxiliary batteries
4.2.1 General
An auxiliary battery shall only be intended for the electric power supply of the living area.
4.2.2 Type of battery
An auxiliary battery shall be of the rechargeable type.
Non-rechargeable batteries are not auxiliary batteries according to 4.2. They may be used, provided that they are
used in circuits separated from other sources of electrical supply.
4.2.3 Capacity
An auxiliary battery shall have a minimum capacity of at least 60 Ampere-hours (Ah) at 20 h discharge rate.
NOTE It is recommended to use a battery designed to be discharged over long periods at a relatively low current.
4.2.4 Terminals
Auxiliary battery terminals shall be clearly and durably marked “+” and “–“. Connections to auxiliary battery
terminals shall be securely clamped or bolted to ensure continuous contact and shall be insulated unless the
auxiliary battery is provided with an insulating cover.
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SIST EN 1648-2:2005
EN 1648-2:2004 (E)
4.2.5 Location
If an auxiliary battery is not installed in the engine compartment, it shall be placed in a compartment according to
4.2.6, which is designed to protect it from mechanical damage, with easy access for maintenance and/or removal
and secured to prevent movement of the battery, e.g. when the motor caravan is in motion.
4.2.6 Auxiliary battery compartment
An acid resistant liquid tight tray shall be installed under an auxiliary battery whose electrolyte is liquid capable of
holding at least 20 % of the electrolyte capacity of the recommended battery, when in place.
The interior of an auxiliary battery compartment shall be ventilated and protected against the corrosive effect of
acid-laden gases, either by
a) installing a sealed auxiliary battery that incorporates an external ventilating kit that is taken to the exterior of
the motor caravan; or
b) installing an auxiliary battery in an enclosed battery compartment that is protected in
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