EN 1648-2:2018

Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 2: Motor caravans

This European Standard 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 European Standard 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 60364 7 721.

Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für DC 12 V - Teil 2: Motorcaravans

Diese Europäische Norm legt die sicherheitstechnischen, gesundheitlichen und funktionellen Anforderungen an elektrische Kleinspannungsanlagen (en: extra low voltage, ELV) DC 12 V im Wohnbereich von Motorcara¬vans fest.
Sie gilt ausschließlich für Anlagen, die mit der elektrischen Anlage des Basisfahrzeugs galvanisch verbunden sind oder durch Umschalteinrichtungen galvanisch damit verbunden werden können.
Diese Europäische Norm legt auch die Anforderungen an die Kleinspannungsleistungsabgabe von Nieder-spannungs (LV )Geräten fest, die benutzt werden dürfen, um eine Kleinspannungsversorgung zu sichern, aber sie legt nicht die Sicherheitsanforderungen, technischen und funktionellen Anforderungen an Niederspannungsgeräte und  anlagen fest. Anforderungen an Niederspannungsanlagen sind in HD 60364-7-721 festgelegt.

Véhicules habitables de loisirs - Installations électriques à très basse tension de 12 V en courant continu - Partie 2: Autocaravanes

La présente Norme européenne spécifie les exigences en matière de sécurité, de santé et de fonctionnement s’appliquant aux installations électriques à très basse tension (TBT) de 12 V en courant continu (CC) utilisées dans la partie habitable des autocaravanes.
Elle ne s’applique qu’aux installations électriques reliées à l’installation électrique du véhicule de base ou qui peuvent y être reliées par l’intermédiaire de dispositifs de couplage.
La présente Norme européenne spécifie également les caractéristiques de sortie TBT des équipements basse tension (BT) pouvant être utilisés pour fournir une alimentation TBT, mais n’impose pas d’exigences en matière de sécurité ou de caractéristiques techniques et fonctionnelles s’appliquant aux appareils et installations BT. Les exigences relatives aux installations BT sont spécifiées dans la norme HD 60364-7-721.

Bivalna počitniška vozila - 12 V enosmerna električna napeljava male napetosti - 2. del: Avtodomi

General Information

• Status: Published
• Publication Date: 16-Jan-2018
• Withdrawal Date: 30-Jul-2018
• ICS: 43.040.10 - Electrical and electronic equipment
• ICS: 43.100 - Passenger cars. Caravans and light trailers
• Technical Committee: CEN/TC 245 - Leisure accommodation vehicles
• Drafting Committee: CEN/TC 245/WG 6 - Habitation requirements relating to health and safety, and 12V direct current extra low voltage electrical installations
• Current Stage: 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
• Start Date: 14-Dec-2023
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 1648-2:2018 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 2: Motor caravans

Relations

• Replaces: EN 1648-2:2012 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 2: Motor caravans
• Effective Date: 08-Jul-2015

Overview

EN 1648-2:2018 is the CEN European standard that sets safety, health and functional requirements for 12 V direct current (DC) extra low voltage (ELV) electrical installations used in the habitation areas of motor caravans. It applies where the habitation electrical system is electrically connected to the base vehicle installation (or can be by change‑over devices). The standard defines supply limits (nominal 12 V, 11–15 V range), minimum auxiliary battery capacity and installation, wiring, overcurrent protection and user information requirements for safe 12 V DC systems in motor caravans.

Key topics and technical requirements

• Voltage and supply: Nominal DC 12 V supply (minimum 11 V, maximum 15 V). ELV outputs from LV equipment are covered only as ELV supplies; LV appliance requirements are not specified by this document.
• Auxiliary battery:
  • Rechargeable type intended for habitation circuits only.
  • Minimum capacity: 60 Ah at 20 h discharge rate.
  • Terminals must be clearly marked “+” and “–” and securely clamped/bolted.
  • Location: installed in a protected compartment or specified position with easy access and secured against movement.
  • If underslung, follow vehicle regulations for ground clearance (see Directive 2007/46/EC).
• Battery compartment and ventilation:
  • Electrolyte‑resistant tray required where electrolyte can flow; tray must hold at least 20% of the electrolyte capacity of the recommended battery.
  • Compartments must be ventilated and sealed to prevent corrosive gas ingress to habitable areas; minimum low‑level ventilation of 80 mm² (standard gives further ventilation and construction details).
• Wiring and cable requirements:
  • Minimum cross‑section rules and cable types specified; Annex A provides graphs and calculation methods relating cable cross‑section, current and length.
  • Requirements for cable supports, connections and auxiliary battery cabling.
• Overcurrent protection:
  • Protection of positive conductors, acceptable types of devices (fuses/circuit breakers), installation and prohibited locations are defined.
• Appliance installation and chargers:
  • Selection/connection rules for 12 V appliances, socket outlets, battery chargers and voltage‑drop considerations.
• User documentation:
  • A user’s handbook is required, including instructions where an auxiliary battery is intended but not provided, and installation guidance.

Applications - who uses this standard

• Motor caravan manufacturers and bodybuilders designing habitation electrical systems.
• Vehicle electrical designers and OEM suppliers (batteries, chargers, converters).
• Electrical installers, retrofitters and service workshops performing habitation wiring and battery installations.
• Certification bodies, inspectors and regulators verifying compliance for EU market entry.
• Component manufacturers specifying ELV outputs for converters/chargers intended for motor caravan use.

Related standards

• EN 1648-1 (caravans) - sibling part for towed caravans
• HD 60364-7-721 - requirements for LV installations (referenced for LV appliance safety)
• EN 13878, EN 60529, EN 50525, ISO 6722, ISO 8820 - referenced normative standards for terms, enclosures, cables and fuses

EN 1648-2:2018 is essential for ensuring safe, compliant 12 V DC habitation electrical systems in motor caravans and supports manufacturers and installers in meeting harmonized European safety expectations.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für DC 12 V - Teil 2: MotorcaravansVéhicules habitables de loisirs - Installations électriques à très basse tension de 12 V en courant continu - Partie 2 : AutocaravanesLeisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 2: Motor caravans43.100Osebni avtomobili. Bivalne prikolice in lahke prikolicePassenger cars. Caravans and light trailers43.040.10RSUHPDElectrical and electronic equipmentICS:Ta slovenski standard je istoveten z:EN 1648-2:2018SIST EN 1648-2:2018en,fr,de01-marec-2018SIST EN 1648-2:2018SLOVENSKI
STANDARDSIST EN 1648-2:20121DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1648-2
January
t r s z ICS
v uä r v rä s râ
v uä s r r Supersedes EN
s x v zæ tã t r s tEnglish Version
Leisure accommodation vehicles æ
s t V direct current extra low voltage electrical installations æ Part
tã Motor caravans Véhicules habitables de loisirs æ Installations électriques à très basse tension de
s t V en courant continu æ Partie
tã Autocaravanes
Bewohnbare Freizeitfahrzeuge æ Elektrische Anlagen für DC
s t V æ Teil
tã Motorcaravans This European Standard was approved by CEN on
t r November
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x v zæ tã t r s z ESIST EN 1648-2:2018

Relation of cable cross-sectional area, current flow and cable length for fixed wiring installations . 14 A.1 General . 14 A.2 Graphs for obtaining minimum cross-sectional areas . 14 A.3 Calculation of the minimum cross-sectional areas . 15 Bibliography . 17
Figure 1 — Overview of relevant European Standards applying to leisure accommodation vehicles SIST EN 1648-2:2018

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