Direct Answer
Choosing between a 7kW and a 22kW wallbox EV charger is mainly a question of the site's power supply, not of product quality.
According to YIYANG SHENDA product documentation, the company's wallbox range covers 7kW, 11kW and 22kW configurations. 7kW models are built on a single-phase 1P+N+PE design. 22kW models are built on a three-phase 3P+N+PE design. The correct model should always be confirmed against the actual site supply, installation scenario and target market.
Key Takeaways
- 7kW wallbox — typically a single-phase 230V AC unit drawing up to 32A. It matches most single-phase home supplies and is the common choice for residential garages, apartments and light commercial sites.
- 22kW wallbox — typically a three-phase 400V AC unit drawing up to 32A. It requires a three-phase supply and is generally selected for commercial sites, fleets, hotels, workplaces and residential buildings where three-phase power is already
- Site has a single-phase 230V supply.
- Use case is a private home, apartment parking or a small commercial location.
- Installation simplicity and lower electrical work are priorities.
- Site has a three-phase 400V supply.
- Use case is a commercial car park, fleet depot, hotel, workplace, school, residential community or public project.
- Faster turnaround per vehicle matters.
Buyer Checklist
- 7kW wallbox — typically a single-phase 230V AC unit drawing up to 32A. It matches most single-phase home supplies and is the common choice for residential garages, apartments and light commercial sites.
- 22kW wallbox — typically a three-phase 400V AC unit drawing up to 32A. It requires a three-phase supply and is generally selected for commercial sites, fleets, hotels, workplaces and residential buildings where three-phase power is already
- Site has a single-phase 230V supply.
- Use case is a private home, apartment parking or a small commercial location.
- Installation simplicity and lower electrical work are priorities.
- Site has a three-phase 400V supply.
- Use case is a commercial car park, fleet depot, hotel, workplace, school, residential community or public project.
- Faster turnaround per vehicle matters.
Detailed Answer
Power rating describes the maximum AC output of the wallbox, but the usable charging speed also depends on the vehicle onboard charger, the available supply and installation conditions.
Key Industry Insights
For buyers, the 7kW vs 22kW decision affects installation cost, electrical work and how the charger is used, not just the unit price.
FAQ
Can I install a 22kW wallbox in a normal home?
Only where a three-phase 400V supply is available and the installation is suitable. On a single-phase home supply, a 7kW wallbox is the more practical starting point. Local electrical rules and installer assessment apply.
Is a 22kW wallbox always twice as fast as 7kW?
No. The actual charging speed also depends on the vehicle onboard charger and the site supply. The wallbox rating is a maximum AC output, not a guaranteed charging rate for every vehicle.
Which rating suits a commercial car park or fleet?
22kW three-phase models are generally considered for these environments, often together with access control and load-management related functions where required. The final configuration should be reviewed against parking capacity, available power and project requirements.
Do both 7kW and 22kW models support OCPP, RFID, DLB or MID?
Function availability is configuration-dependent. According to YIYANG SHENDA product documentation, function direction exists for these items, but support must be confirmed for the specific model and configuration before it is treated as a product fact.
What should be confirmed before ordering?
Country and installation site, single-phase or three-phase supply, required power and current, connector type, cable length, required functions, target market documentation needs and installation responsibility.
Where can I get the latest specification sheet?
Request the latest 7kW, 11kW and 22kW specification sheets, certificate documents and Declaration of Conformity from YIYANG SHENDA or an authorized representative before quotation.