The supply capacity of the property, the protective arrangement the installation requires, and the local rules on notification and earthing — all of which are assessed by a qualified installer. The wallbox’s own connector type and current rating are the easy part.
A wallbox is one of the few products on this site that cannot be bought first and planned around afterwards.
The supply comes first
A charger adds a substantial continuous load to a property. Whether the existing supply accommodates it, and whether load management or an upgrade is needed, is an assessment of the building rather than a property of the charger. It is done before selection, not after.
The protection arrangement
Charging installations have specific requirements for residual-current protection and for earthing, and those requirements are set by national wiring rules. Some wallboxes include protective functions and some expect them upstream; the maker states which.
What the vehicle decides
The rate at which a car accepts alternating current is set by its on-board charger, not by the wallbox. A charger capable of more will not make the car charge faster, which is the specification most often mismatched in this purchase.
What is genuinely a product choice
Connector type, cable length or a socket, whether it is tethered, how it authenticates, whether it can be scheduled or controlled remotely, and whether it integrates with solar generation. Those are comparable between products; the rest is an assessment of the house.
Where this page and the manufacturer’s documentation differ, the documentation is the one to follow. Every capacity, output, input window, current limit, cycle count and temperature threshold on this page comes from the maker’s own published figures, with the unit as printed and the source named. None of it is measured here, and no figure is converted into another convention, because a converted number is a different number. And the limit this page does not cross: no cable size, fuse rating, earthing arrangement or mounting described here makes an installation safe. The page reports what a maker specifies for its own product — an input protection device, a clearance, a grid standard it names — and what applies to your installation is decided by the regulations in force where you live and by whoever is qualified to work to them.
What people ask before they order
Why is the supply capacity the first question?
Because a charger is a large sustained load added to whatever the property already draws. Whether it fits, and whether load management is required, is determined before any equipment is chosen.
What is the connector standard?
In Europe the alternating-current connector is defined by IEC 62196, commonly called Type 2. The vehicle’s own inlet and its on-board charger decide what rate it can accept.
Last reviewed 16 September 2026