| Charger Type | AC Level 2 wallbox using a permanently installed circuit | AC Level 1 portable charging cable | A wallbox is generally more suitable for regular overnight charging because it provides higher power and better cable management. |
| Rated Charging Power | 7.4 kW for single-phase homes or 11 kW for compatible three-phase homes | 22 kW where the vehicle, property supply, and local electrical system all support it | Choose the highest output that the vehicle and available electrical supply can safely use. A higher wallbox rating does not increase the vehicle's onboard AC charging limit. |
| Supply Voltage | Approximately 230 V single-phase or 400 V three-phase, depending on the region | Approximately 120 V single-phase in some North American installations | Confirm the home's nominal voltage and phase arrangement with a qualified electrician before selecting the circuit and wallbox. |
| Maximum Current | 32 A for a common 7.4 kW single-phase installation; approximately 16 A for an 11 kW three-phase installation | Up to 32 A per phase for a 22 kW three-phase installation | The configured current must not exceed the wallbox rating, vehicle limit, cable rating, or the capacity of the dedicated circuit. |
| Expected Charging Speed | Approximately 35–55 km of driving range per hour at 7.4 kW, depending on vehicle efficiency | Approximately 50–75 km of driving range per hour at 11 kW | Actual range added varies with battery temperature, charging losses, vehicle efficiency, and the vehicle's onboard charger. |
| Connector Arrangement | Fixed cable or a compatible AC vehicle connector approved for the local market | Socketed wallbox with a detachable charging cable | Use the connector type required by the vehicle and local regulations. Keep the connector clean, dry, and protected when not in use. |
| Dedicated Circuit | Required for normal wallbox installation | Shared household circuits are unsuitable for a full-power wallbox | The circuit should be sized by a licensed electrician according to local electrical codes, cable length, installation method, and continuous-load requirements. |
| Residual-Current Protection | Residual-current protection suitable for EV charging, with DC leakage protection where required | Basic household residual-current protection may be insufficient for every wallbox design | Follow the wallbox installation manual and local code. The protection arrangement depends on whether DC residual-current detection is built into the charger. |
| Overcurrent Protection | Dedicated circuit breaker matched to the configured charging current | Oversized or shared protection is not acceptable | Do not increase the breaker rating to obtain more charging power unless the complete circuit has been designed and verified for that rating. |
| Dynamic Load Management | Recommended where the home has limited electrical capacity or several large loads | Fixed-current charging where sufficient spare capacity is available | A compatible energy meter can reduce charging current when ovens, heat pumps, or other major loads are operating, helping prevent service overload. |
| Outdoor Protection | Weather-resistant enclosure with an outdoor protection rating of at least IP54; higher protection may be preferable | Indoor-only enclosure | Install away from standing water, direct mechanical impact, and locations where the cable can become a trip hazard. Follow the manufacturer's mounting limits. |
| Operating Temperature | Typically about −25°C to +50°C, subject to the selected unit's specification | Reduced output may occur at temperature extremes | Keep ventilation openings clear and avoid enclosing the wallbox in a sealed cabinet unless the installation instructions specifically permit it. |
| Communication | Local control with optional Wi-Fi, Ethernet, Bluetooth, or cellular connectivity | Basic plug-and-charge operation without networking | Networking can support scheduling, firmware updates, energy monitoring, and remote status checks, but charging should remain usable if the internet is unavailable. |
| Charging Schedule | Off-peak or solar-aware scheduling | Immediate charging at the configured current | Set the vehicle or wallbox schedule, but avoid enabling conflicting schedules in both systems unless their operating logic is understood. |
| Solar Integration | Optional solar-surplus charging with a compatible energy meter | Grid-only charging | Solar-only modes may pause or reduce charging when generation falls. A minimum charging current may be needed for stable operation. |
| Access Control | App, RFID card, PIN, or vehicle authorization where supported | Open plug-and-charge access | Enable access control if the charger is installed in a shared driveway or exposed parking area. Keep recovery credentials in a secure location. |
| Mounting Location | Near the normal parking position, with enough clearance for the cable and connector | Remote mounting that requires a long cable | Choose a solid vertical surface, keep the cable off the ground, and allow sufficient space for maintenance and connector handling. |
| Installation Height | Set according to local accessibility rules and the wallbox instructions | Very low or overhead mounting | The connector should be reachable without stretching, bending the cable sharply, or placing the control panel where it can be struck by a vehicle. |
| Typical Installation Time | Several hours for a straightforward installation near the electrical panel | One or more days when trenching, long cable routes, or service upgrades are required | Time depends on cable routing, wall construction, permits, inspection requirements, and whether the electrical service needs modification. |
| Electrical Service Capacity | Verified spare capacity for continuous EV charging | Unverified connection to an existing circuit | An electrician should assess the main supply, distribution board, earthing, cable route, and simultaneous household loads before installation. |
| Commissioning Checks | Protective-device test, insulation check, polarity or phase verification, current-limit test, and functional charging test | Visual inspection only | Record the final configured current and test results. Confirm that the wallbox stops charging correctly when protection devices operate. |
| Best Choice for Most Homes | 7.4 kW or 11 kW smart AC wallbox with adjustable current and load management | 22 kW only when the vehicle and electrical installation genuinely support it | Prioritize electrical safety, daily charging needs, cable length, weather protection, warranty support, and local compliance over maximum advertised power. |
