What is 7kW EV charger installation?
A 7kW installation normally means a chargepoint rated at up to about 7.4kW on a 32A single-phase supply. This is a common domestic arrangement in London, but the charger setting must suit the property and the car. The advertised output is not a promise that the vehicle will draw that power throughout every session.
Signs you need 7kW EV charger installation
- A slower charger no longer covers your usual daily mileage.
- You want to make better use of an overnight tariff window.
- Your car supports around 7kW AC charging and you want a compatible domestic unit.
- You need advice on charging alongside an electric shower, cooker or heat pump.
What the survey should cover
The installer calculates demand from the whole property and verifies the supply characteristics. A load-management sensor can reduce charging when other appliances are using more power, if the equipment supports it. Cable sizing depends on the installation method, route, protection and voltage drop, not just a standard thickness chosen from a price list.
Preparing a useful enquiry
Give the car model, how much charge you normally need each day and any major electrical appliances. A photograph of the closed meter and fuse equipment can help, but the installer must verify the supply; do not open it yourself.
London properties range from short driveway runs to garages behind terraces and bays beneath apartment blocks. Give the installer the actual route and access details. You can photograph visible equipment with its covers closed; do not open electrical equipment to collect information.
Indicative London installation costs
The service guide range is £850–£1,400 for supply and installation before any grant. It is an estimate, not a fixed quotation or a maximum. Confirm VAT, the model and all exclusions in the written price. A long route, difficult containment or changes to the distribution equipment can take the job beyond a basic package. Confirm whether a load sensor and its communication cable are included. Any network works need their own scope and timetable.
From survey to handover
- Confirm the car’s AC charging limit, expected daily top-up and the available single-phase supply.
- Assess maximum demand and decide whether dynamic load management or a lower setting is needed.
- Check whether the network operator requires prior approval or supply work.
- Fit the appropriately designed circuit, chargepoint and any required load sensor.
- Test the protection and control settings, demonstrate operation and record the installed current limit.
Typical on-site work is around 3–6 hours, depending on the agreed scope. This does not include time waiting for consent, parts or network work. Agree any power interruption and who will complete making-good before the visit.
Charging time is a calculation, not a guarantee
Adding 35kWh at a steady 7kW takes five hours before allowing for losses or reductions in output. A car with a lower AC limit will take longer. Typical domestic 11kW and 22kW AC charging needs a suitable three-phase supply and a compatible vehicle, so a higher number on a unit alone does not make it faster.
Electrical checks and permissions
A new domestic charger circuit is notifiable work under Part P. Ask how the installer will arrange Building Regulations compliance, usually through a registered competent person scheme or the appropriate building control route. You should receive an Electrical Installation Certificate and the relevant compliance documentation. Approved Document P explains the requirements; scheme registration and electrical certification are not the same as grant authorisation.
The installer should identify the relevant network operator and arrange notification or prior approval as needed. UK Power Networks chargepoint guidance explains its process. A looped supply or a proposed capacity change can affect the timetable; obtain a specific answer about any charges rather than assuming all associated work is free.
Check the necessary landlord, freeholder and planning consents for the proposed position. Listed buildings and installations affecting shared land need particular attention. If you only have street parking, ask the council about public charging or an approved cross-pavement scheme; a loose lead over a footway is not a standard installation arrangement.
Request quotes from London installers
Use one free enquiry to ask for up to four quotations, subject to availability. Ask each business about similar installations, insurance and the support offered after commissioning.
EV Chargers London is a consumer matching service. We do not carry out installations or employ the electricians who quote. Companies joining the network are asked to provide relevant insurance details and references. You choose the installer and contract with that business directly.
Frequently asked questions
Will a 7kW unit charge every car at 7kW?
No. The car’s onboard AC charger, the cable rating, the installed current limit and any load management can reduce the actual rate.
Can a 7kW charger work with a 60A main fuse?
It may be possible after a demand assessment, sometimes with dynamic load management or a reduced setting. The installer must verify the supply and follow the network operator’s requirements.