Wiring for electric vehicles: which cable is suitable for the charging station

The right cabling for electric vehicles: which cable is suitable for charging stations?

With the rapid spread of electromobility, the need for reliable, safe and future-proof charging infrastructure is increasing - both for private households and for commercial applications such as fleet operators, car park providers or industrial companies. Choosing the right cable is crucial to ensure a stable power supply, maximum safety and a long service life of the installation. In this article, we highlight the suitable cable types for various scenarios - from home charging stations and public charging points to temporary or mobile charging solutions - and provide professional partners, B2B customers and buyers with detailed insights into the technical requirements and suitable products from ekabel24.de.

NYY underground cables: Robust and durable for permanent outdoor installation

The NYY-J underground cable is the first choice for the permanent installation of charging stations outdoors, for example for wall boxes in private garages or public charging points. This cable is specially designed for direct burial in the ground and offers outstanding properties such as UV resistance, moisture resistance and mechanical robustness. It complies with the standards for permanent installations and is available in different cross-sections to fulfil different power requirements (e.g. 11 kW or 22 kW charging stations). Especially for B2B customers realising large charging infrastructure projects, the choice of a high-quality NYY-J cable is essential to ensure long-term reliability and low maintenance costs.
Areas of application: Connection from the house connection or transformer station to the charging station, laying in gardens, car parks or industrial areas.
Technical details: Available in cross-sections from 1.5 mm² to 240 mm², 3- to 5-core, VDE-certified.
→ NYY-J underground cable

H07RN-F rubber cable: flexibility for mobile and temporary charging solutions

The H07RN-F rubber cable is ideal for temporary or mobile charging infrastructures, such as those required on construction sites, at events, in rental car fleets or in temporary car parks. This cable is characterised by its high flexibility, oil resistance and cold flexibility down to -25 °C. It withstands mechanical stress and is optimised for outdoor use, making it the perfect choice for mobile charging stations or extension cables. For professional users such as event organisers or logistics companies, H07RN-F offers the necessary robustness to ensure a reliable power supply even under demanding conditions.
Areas of application: Mobile chargers, temporary charging points, use in harsh environments.
Technical details: Cross-sections from 1.5 mm² to 25 mm², 3- to 5-core, in accordance with VDE 0282.
→ H07RN-F rubber cable

NYM-J sheathed cable: reliable indoor installation for wallboxes

When installing charging stations indoors - in garages, basements or underground car parks, for example - the NYM-J sheathed cable is the standard solution. This cable is suitable for installation under plaster, in cable ducts or on walls in dry and damp rooms. It offers a high level of safety thanks to its robust insulation and is easy to work with, which makes it attractive for electrical installers and B2B customers. For larger projects, such as equipping underground car parks with several charging points, NYM-J is available in various cross-sections to cover the power requirements (e.g. for fast charging stations).
Areas of application: Connection from the main distribution board to the wallbox, installation in buildings.
Technical details: Cross-sections from 1.5 mm² to 35 mm², 3- to 5-core, VDE-certified.
→ NYM-J sheathed cable

CEE cables: Practical for mobile charging stations and industrial applications

Mobile charging stations that are operated with CEE plugs (e.g. 16A or 32A) are widely used in commercial environments such as workshops, logistics centres or public car parks. Suitable CEE extension cables offer a quick and safe solution to extend the range of the charging station. These cables are robust, with clear colour coding for easy handling and meet the highest safety standards. For B2B customers planning industrial charging infrastructure, CEE cables are indispensable as they offer a flexible and scalable solution.
Areas of application: Mobile charging stations, industrial environments, temporary power supply.
Technical details: Available for 16A or 32A, with IP44 or IP67 protection rating, 3 to 5-core.
→ CEE cable

Additional considerations for B2B partners: Standards, safety and scalability

For professional users and B2B partners, compliance with standards such as VDE, IEC 61851 (charging systems for electric vehicles) and DIN EN 50620 (charging cables for electric vehicles) is crucial. All cables offered at ekabel24.de B2B fulfil these standards and have been tested for use in demanding environments. Buyers and installers should also consider the following aspects:

• Power requirements: the choice of cable cross-section depends on the charging power (e.g. 3.7 kW, 11 kW or 22 kW) and the cable length in order to minimise voltage losses.
• Future-proof: For scalable charging infrastructures, the use of cables with higher cross-sections is recommended to enable future power increases.
• Protection class: In outdoor areas, cables and connections should have a protection class of at least IP44, or even better IP67.
• Fire protection: In buildings, the use of halogen-free cables (e.g. NHXMH) should be checked in order to increase fire safety.
  → Halogen-free cables

Conclusion

Cabling is the backbone of any charging infrastructure for electric vehicles - whether for private wallboxes, commercial charging parks or mobile charging solutions. With high-quality products such as NYY-J earth cables, flexible H07RN-F rubber cables, NYM-J sheathed cables, CEE cables and halogen-free cables, ekabel24.de offers the right solution for every application. Our products are VDE-certified, durable and designed to meet the requirements of B2B customers and professional installers. Contact our team for customised advice or project enquiries to design your charging infrastructure efficiently and safely.