EV Charger Installation: How It Works, What You Need & What to Expect
Getting an EV charger installed at home sounds simple.
You choose a charger, find a suitable wall and get it connected.
In reality, EV charger installation is a combination of choosing the right charger, assessing the property, planning the electrical route and making sure the finished installation is safe and suitable for everyday use.
The good news is that you don't need to become an electrician to understand the process.
This guide explains how EV charger installation works in the UK, what is normally checked before installation, what can affect the setup and what you should expect from a professional installation.
It is also worth remembering that the charger and the installation should be considered together.
The best charger on paper isn't necessarily the best choice for your car, your electrical supply or the place where you park.
What Is EV Charger Installation?
EV charger installation is the process of connecting a dedicated electric vehicle chargepoint to your property's electrical system and positioning it so you can safely and conveniently charge your vehicle.
A typical home installation involves much more than mounting the charger.
The installer may need to consider:
-
Your vehicle and its charging capability
-
The charger power you need
-
Your home's electrical supply
-
The consumer unit
-
The proposed charger location
-
The distance between the electrical supply and charger
-
The cable route
-
Protection and isolation
-
Earthing arrangements
-
Whether the charger is suitable for indoor or outdoor use
-
How the finished setup will work in your everyday parking routine
UK EV charging installations are subject to specific electrical requirements. Section 722 of BS 7671 covers electric vehicle charging installations, while current electrical guidance also reflects the wider requirements of BS 7671 and its amendments.
This is why a professional assessment matters.
How Does EV Charger Installation Work?
Although every property is different, the process usually follows a logical sequence.
1. Start with the car
Before choosing an installation setup, start with the vehicle.
Your EV has its own maximum AC charging capability.
For example, installing a higher-powered charger doesn't automatically mean your car will charge at that higher rate. Your vehicle's onboard charging capability remains an important limitation.
This is one reason choosing the charger should come before planning the installation.
For many UK homes, a 7kW-class charger is a practical everyday option, but the appropriate choice depends on the vehicle, property and intended use.
For a more detailed comparison of charging speeds, see:
7.4kW vs 22kW EV Chargers: Which One Is Right for You?
2. Decide where the charger should go
The best charger position is usually the one that works naturally with where you park.
That sounds obvious, but it can have a major effect on the installation.
Think about:
-
Where the charging port is on your car
-
Where the car normally sits
-
Whether you park forwards or backwards
-
How far the cable needs to reach
-
Whether the charger will be on a house wall, garage or another suitable surface
-
Whether the location is exposed to weather
-
Whether the cable could create a trip hazard
-
Whether the charger will remain convenient if you change vehicles
A driveway isn't automatically better than a garage.
A garage isn't automatically better than an outside wall.
The right position is the one that provides a practical charging routine while allowing an appropriate installation route.
For a deeper look at positioning, see:
Where Is the Best Place to Install an EV Charger?
3. The installer assesses the electrical supply
This is one of the most important parts of the process.
A home charger becomes part of your property's electrical installation, so the existing electrical setup has to be considered before the charger is connected.
The assessment may include:
-
Consumer unit
-
Available capacity
-
Earthing arrangement
-
Existing circuits
-
Cable route
-
Protective devices
-
Charger demand
-
The proposed installation method
The exact requirements vary from property to property.
Current IET guidance explains that EV charging circuits need to comply with BS 7671, including requirements relating to circuit design, cable selection, overcurrent protection and voltage drop.
This is also why there is no single cable size that is correct for every EV charger installation.
Cable selection depends on the actual installation design.
4. Plan the cable route
Once the charger position and electrical supply have been considered, the cable route can be planned.
This is often where two installations that look similar from the outside can turn out quite differently.
A short, straightforward route might be relatively simple.
Another property might require the cable to travel:
-
Around the side of a house
-
Through a garage
-
Along an external wall
-
Through a longer internal route
-
Across a more complicated section of the property
-
Through suitable containment or protection
The route affects the installation method, appearance, cable requirements and potentially the total installation cost.
For certain infrastructure projects, UK government specifications explicitly require dedicated, safe and unobstructed routes for electrical cabling.
5. The correct cable is selected
This is where installation design becomes particularly important.
You may see people online saying things like:
“A 7kW charger always needs X mm² cable.”
That is not a safe universal rule.
The appropriate cable specification can depend on factors including:
-
Charger power
-
Cable length
-
Installation method
-
Voltage drop
-
Ambient conditions
-
Grouping
-
Protective devices
-
Supply characteristics
-
Cable construction
-
Manufacturer requirements
IET installation guidance states that cable type and cross-sectional area should be selected to meet requirements including protection against electric shock, overcurrent protection and voltage drop.
So the right question isn't:
“What cable size does every 7kW charger need?”
It is:
“What cable specification is appropriate for this charger and this installation?”
That's a much better way to think about it.
For more detail, see:
What Size Cable Do I Need for an EV Charger? UK Guide
6. Armoured or unarmoured cable?
Depending on the property and cable route, the installation design may involve different cable types or additional protection.
A route that is straightforward and well protected may be very different from one where cabling has to travel through an exposed or vulnerable area.
This is why an armoured vs unarmoured decision should not be made simply by choosing whichever sounds stronger.
The installation environment matters.
The installer needs to consider the route, mechanical protection, installation method and the applicable electrical requirements before specifying the cable.
7. The charger is installed
Once the design and route have been established, the physical installation can take place.
Depending on the property, this can include:
-
Positioning the charger
-
Installing the required electrical cabling
-
Connecting the charger to the appropriate supply
-
Installing or confirming required protective equipment
-
Managing and protecting the cable route
-
Securing the charger
-
Making the required electrical connections
A home EV chargepoint should be installed by a suitably competent professional.
Electrical Safety First recommends that home charging points are installed by a registered and competent electrician trained and qualified to install EV chargepoints.
8. The installation is tested
The job isn't finished when the charger lights up.
The installation needs to be checked and tested.
This can include verifying:
-
Electrical connections
-
Protective devices
-
RCD protection where applicable
-
Charger operation
-
Charging functionality
-
Relevant safety requirements
IET guidance notes specific requirements around RCD protection for EV charging equipment and testing of associated RCDs.
For grant-supported installations, OZEV also requires authorised installers to test installed chargepoints and provide the required documentation for claims.
9. The charger is configured
For a smart EV charger, installation is not necessarily the end of the customer experience.
Depending on the charger, the final setup may include:
-
Connecting the charger to its app
-
Configuring charging schedules
-
Connecting relevant tariff functionality
-
Completing commissioning
-
Explaining basic operation
The exact features depend on the charger.
That's another reason we recommend comparing the complete charging solution, rather than just looking at the hardware specification.
10. You are shown how to use it
A good installation should leave you understanding the basics of your charging setup.
You should know:
-
How to start and stop charging
-
How to connect the vehicle
-
How to use the app if applicable
-
How scheduled charging works
-
Where to find basic charger information
-
What to do if something doesn't work as expected
The goal isn't just to leave you with a charger on the wall.
It is to leave you with a charging setup that works as part of your normal routine.
How Long Does EV Charger Installation Take?
There isn't one fixed installation time for every property.
A straightforward installation can be significantly simpler than a property requiring:
-
A longer cable route
-
Additional electrical work
-
More complicated access
-
A different charger position
-
Additional protection
-
More extensive cable management
This is why installation quotations often depend on the individual property rather than simply charging a universal installation fee.
For detailed pricing information, see:
How Much Does It Cost to Install an EV Charger in the UK?
What Can Affect the Cost of EV Charger Installation?
The charger itself is only one part of the overall setup.
Installation cost can be affected by things such as:
-
Charger model
-
Cable route
-
Distance from supply to charger
-
Installation location
-
Electrical upgrades
-
Additional protection
-
Groundwork
-
Cable containment
-
Property-specific requirements
That is why comparing two EV chargers purely on their advertised hardware price can be misleading.
One package might include installation.
Another might not.
One property might require very little additional work.
Another might require considerably more.
For a detailed breakdown, read:
How Much Does It Cost to Install an EV Charger in the UK?
Do You Need Planning Permission for an EV Charger?
This depends on the property, location and the nature of the proposed installation.
For a normal domestic installation, the installer should assess the property and identify any relevant permissions or constraints before work begins.
This becomes particularly important for situations involving:
-
Listed buildings
-
Flats
-
Shared parking
-
Land you do not own
-
On-street parking
-
Cross-pavement charging arrangements
For some current OZEV grant schemes, customers also need relevant permissions for the installation. For example, grant applicants may need written permission from a landlord, freeholder or property manager, while listed-building situations can require local-authority permission.
What About EV Charger Grants?
Installation grants are separate from the basic installation process, and eligibility depends on the specific scheme.
As of 2026, the UK government has extended several EV chargepoint grant schemes to 31 March 2027, with revised grant rates from 1 April 2026.
For example, current schemes include support for eligible renters and flat owners and households with on-street parking, while the Workplace Charging Scheme can provide support for eligible businesses.
An important point is that customers must follow the relevant grant process before installation. For current home grant schemes, customers must not have the chargepoint installed before being notified that they are eligible.
For the latest eligibility rules, see our dedicated:
What Should You Ask Before Your EV Charger Is Installed?
Before approving an installation, ask:
Will the charger suit my car?
Check the vehicle's maximum AC charging capability and connector requirements.
Where will the charger actually be positioned?
Don't just ask whether it can be installed.
Ask where it will be installed and why that location makes sense.
What cable route will be used?
A neat installation should consider appearance, safety, access and cable management.
Is my electrical supply suitable?
The installer should assess the property's electrical setup rather than simply assuming it is ready.
What is included in the installation price?
Ask whether the quoted price includes the charger, installation, standard electrical work, commissioning and any other expected items.
What happens after installation?
Ask about warranty, support, app setup and what happens if the charger develops a problem.
Can You Install an EV Charger Yourself?
An EV charger is not the same as plugging a normal appliance into a socket.
It becomes part of the property's electrical installation and involves electrical design, protection, testing and verification.
Electrical Safety First recommends using a registered and competent electrician for home chargepoint installation, while BS 7671 contains specific requirements for EV charging installations.
So this guide is intended to help homeowners understand the installation process, not provide a DIY wiring manual.
That distinction matters.
Knowing what should happen gives you a better position when choosing your charging solution and reviewing an installation quote.
Do You Need a New Consumer Unit for an EV Charger?
Not necessarily.
The existing electrical installation needs to be assessed first.
Depending on the property, an installer may determine that the existing arrangement is suitable, or that additional electrical work is required.
This is another reason not to assume that every EV charger installation follows the same process.
Does a Longer Cable Mean a More Complicated Installation?
Potentially.
The longer the electrical route, the more factors can become relevant, including voltage drop, installation method, cable selection and protection.
This doesn't mean that a long cable route is automatically a problem.
It simply means that the installation should be designed around the actual property.
What Is the Difference Between Installation Cable and an EV Charging Cable?
This causes a lot of confusion.
There are effectively two different things people call an EV charging cable.
Fixed installation cable
This is part of the electrical installation connecting the property's electrical supply to the charger.
Portable charging cable
This is the cable you use to connect an untethered charger to your vehicle.
They are not the same thing.
Our separate EV Charging Cables Explained guide covers the portable Type 1 / Type 2 cable side in more detail.
What Is the Best Place to Install an EV Charger?
There isn't one universally perfect position.
The best location depends on:
-
Where you park
-
Charging-port position
-
Cable reach
-
Property layout
-
Electrical supply
-
Appearance
-
Cable management
-
Future vehicle use
A practical installation should fit the way you actually use your car.
Does a 22kW Charger Need a Different Installation?
Potentially, yes.
A higher-powered AC charger can place different demands on the electrical installation and may require a suitable electrical supply and vehicle capability.
For example, a vehicle that cannot accept 22kW AC charging will not charge at 22kW simply because the charger is rated for it.
The installation therefore needs to be considered together with the car and property.
For the charging-speed decision itself, see:
7.4kW vs 22kW EV Chargers: Which One Is Right for You?
Why Buying the Charger and Installation Together Can Make Sense
This is particularly important when choosing a home charging solution.
A charger isn't an isolated box.
It has to work with:
your car + your property + your electrical supply + your parking arrangement + your charging routine.
That's why comparing charger hardware alone can miss part of the decision.
At NextGen Charge, the aim is to provide the charging solution, with installation forming part of the complete service rather than treating installation as the entire business.
That means the conversation can start with the charger that suits your vehicle and charging habits, then move into how that charger should be installed at your property.
Why Choose NextGen Charge?
Choosing a charger should not mean choosing between a product company and an installation company.
You need a solution that brings both parts together.
NextGen Charge provides home EV charging solutions with installation services designed around the charger, vehicle and property.
The process can therefore cover:
Choose the right charger → assess the property → plan the installation → install → test → configure → charge.
That gives you one connected journey rather than trying to coordinate different companies for the charger and installation.
Explore our EV chargers or learn more about Home EV Charger UK before choosing the setup that's right for you.
EV Charger Installation FAQs
How much does it cost to install an EV charger?
The cost depends on the charger, property and installation requirements. Cable route, electrical work and additional requirements can all affect the final price.
See our detailed EV Charger Installation Cost guide for a full breakdown.
How long does EV charger installation take?
Installation time varies by property. A straightforward installation can be considerably simpler than one involving longer cable routes or additional electrical work.
Can an EV charger be installed outside?
Many home chargers can be installed outdoors when the charger and installation are suitable for the location.
The installer should consider weather exposure, positioning, cable management and electrical requirements.
Can I install an EV charger in a garage?
Yes, provided the charger position, electrical supply, cable route and overall installation are suitable.
Can I install an EV charger on any wall?
Not automatically.
The proposed location needs to be suitable for the charger, accessible for the vehicle and practical for the electrical route.
What size cable is needed for an EV charger?
There is no universal answer.
The correct cable specification depends on factors including charger power, cable length, installation method, voltage drop, environmental conditions and protective arrangements.
Do I need a dedicated circuit for an EV charger?
EV charging installations have specific electrical requirements, and the circuit design needs to comply with the applicable regulations and standards.
Do I need an electrician to install an EV charger?
A home chargepoint should be installed by a suitably competent professional. Electrical Safety First recommends a registered and competent electrician trained and qualified to install EV chargepoints.
Can I get a grant for EV charger installation?
Some UK grant schemes currently provide support for eligible households, landlords and workplaces. Eligibility depends on the specific scheme, and grant applicants must follow the relevant application process before installation.
Does NextGen Charge only provide installation?
No.
The installation is part of the broader charging solution. The aim is to help customers choose a suitable charger and provide the installation and setup required to get it working at home.
Final Thoughts
A good EV charger installation isn't simply a charger attached to a wall.
It is a charging setup designed around your car, your property and the way you actually use your EV.
The right process starts with choosing the appropriate charger, checking the property's electrical setup, planning the cable route and installation position, carrying out the work safely and then testing and commissioning the finished system.
For homeowners, understanding this process makes it much easier to compare charging solutions and ask the right questions before buying.
And for NextGen Charge, that's the important distinction:
We aren't simply an installation company.
We provide the charger, the charging solution and the installation that brings it all together.