230 V campervan installation: inlet, protection and documentation
SpaziouSpaziou Technical · 230 V electrics
230 V campervan installation: exterior inlet, protection and documentation
230 V requires different treatment from the 12 V circuit. Design the exterior inlet, protection, conductors, earthing, inverter and changeover to prevent dangerous voltages on a metal body and meet applicable requirements.
The specific reference for caravans and habitation vehicles
Spain’s REBT standards list includes UNE-HD 60364-7-721 for electrical installations in caravans and motor caravans. A campervan therefore needs vehicle-specific assessment rather than simply copying a domestic distribution board.
System components
Exterior inlet
Suitable connector, supply cable and protection for outdoor use.
Protection board
RCD and overcurrent protection sized for the installation.
Earthing
Protective bonding of exposed conductive parts and the body requires a coherent circuit design.
Inverter
Integrate it without cross-feeding or allowing an external input to energise an unintended output.
From the exterior inlet to the leisure battery
The exterior inlet can supply 230 V loads as well as an mains battery charger. These have different functions: the distribution board protects and distributes mains power; the charger converts it to DC using a battery-compatible profile.
Integrated charger
It forms part of the campervan electrical project. Coordinate mains input, protection, positioning, ventilation, battery and documentation.
Portable charger
Useful for maintenance or occasional charging from an existing socket, following manufacturer instructions and battery chemistry.
Mains and inverter: the critical interface
If a campervan can take 230 V from a campsite and also generate it using an inverter, define how the source is selected. Do not improvise with male-to-male leads, backfeeding cables or manual arrangements that could leave conductors energised.
What to prepare for the professional
- Socket layout drawing.
- Inverter and charger power.
- Exterior inlet circuit diagram.
- Approximate cable lengths.
- Distribution board location.
- List of high-power loads.
- Equipment documentation.
Is there a Spanish campervan electrical certificate to download and fill in?
A blank template must not be presented as something owners can use to issue their own official certificate. Statutory certificates are meaningful because an authorised professional signs and takes responsibility for installation or inspection. Spaziou provides a preparation sheet for the installer with all the information worth preparing.
Mistakes to avoid
- Sockets without suitable protection.
- Loose cables exposed to vibration and chafing.
- Inaccessible distribution board.
- Confusing protective earth, 12 V negative and chassis ground without a defined circuit diagram.
- Using a high-power inverter without checking the battery, wiring and DC fuse.
Content reviewed in September 2026. Spanish regulations may change; check your specific conversion with the Spanish ITV inspection service, technical adviser and/or authorised installer responsible for documenting it.
Spain’s BOE · REBT ↗Spain’s BOE · ITC-BT-02 update and UNE-HD 60364-7-721 ↗
