Home EV Charger Installation: What You Need to Know
Everything homeowners need to know about installing an electric vehicle charging point at home. Power ratings, smart features, costs, grants and the installation process explained.
With electric vehicle sales growing rapidly, more homeowners are considering installing a dedicated EV charger at their property. A home charging point is the most convenient and cost-effective way to charge your EV, giving you a full battery every morning without relying on public chargers. This guide covers everything you need to know about home EV charger installation, from choosing the right charger to understanding the installation process and costs.
Why Install a Dedicated EV Charger at Home?
While it is possible to charge an EV using a standard 3-pin socket, this is slow, inefficient and not recommended for regular use. A dedicated home EV charger offers significant advantages:
- Speed: A 7kW home charger adds around 30 miles of range per hour — roughly 3-4 times faster than a 3-pin socket
- Safety: Dedicated chargers are designed for continuous high-current use with built-in protection against overheating and overloading
- Convenience: Plug in overnight and wake up to a fully charged vehicle every morning
- Cost savings: Charging at home on an overnight tariff is significantly cheaper than using public rapid chargers
- Property value: A home EV charger is an attractive feature for future buyers and tenants
- Smart features: Schedule charging during off-peak hours, monitor energy use, and integrate with solar panels
7kW vs 22kW: Which Charger Do You Need?
The most common home EV chargers are 7kW single-phase units, which are suitable for the vast majority of UK homes. A 22kW charger requires a three-phase supply, which most domestic properties do not have. Here is how to choose:
Adds approximately 30 miles of range per hour. Fully charges most EVs overnight in 6-8 hours. Compatible with standard domestic single-phase supplies. The best choice for almost all homeowners.
Adds approximately 90 miles of range per hour. Requires a three-phase electricity supply, which is rare in UK homes but common in some commercial and new-build properties. Only worth considering if you have a compatible supply and vehicle.
Most UK homes have a single-phase supply, so a 7kW charger is the practical choice. If you are unsure what type of supply your property has, our electricians can check this during your free site survey.
Smart Charging Features
Modern EV chargers come with smart features that help you save money and manage your energy use:
- Scheduled charging: Set your charger to start automatically during off-peak hours when electricity is cheapest
- App control: Monitor charging status, start and stop charging, and view energy usage from your smartphone
- Solar integration: Some chargers can prioritise charging using excess solar power from your panels
- Load balancing: Intelligent systems that prevent your home supply from being overloaded when the charger is running
- Energy monitoring: Track exactly how much electricity your EV uses and calculate running costs
- Remote locking: Prevent unauthorised use by locking the charger when not in use
The Installation Process
A professional EV charger installation must be carried out by a qualified electrician and comply with BS7671 wiring regulations and Part P Building Regulations. Here is what the process involves:
- Free site survey: We assess your electrical supply, consumer unit capacity, and the best location for your charger
- Quotation: We provide a fixed-price quote including all materials, labour, certification and notification
- Supply check: We verify your mains supply capacity and determine whether a supply upgrade is needed
- Installation: A dedicated circuit is run from your consumer unit to the charger position, typically taking 2-4 hours
- Testing and certification: Full electrical testing is carried out, and you receive an Electrical Installation Certificate and Building Regulations compliance certificate
- Demonstration: We show you how to use your charger and connect it to the app if applicable
Will My Consumer Unit Handle an EV Charger?
A 7kW EV charger draws approximately 32 amps — similar to an electric oven. Before installation, your electrician must verify that your consumer unit and mains supply can handle this additional load. Key checks include:
- Available spare capacity in your consumer unit
- Your main fuse rating (usually 60A, 80A or 100A)
- Your overall household demand profile
- Whether the existing circuits are adequately protected
If your consumer unit is full or your supply is near capacity, we may recommend a consumer unit upgrade or a supply capacity increase. We always assess this during the free survey and include any necessary work in our quotation.
How Much Does Home EV Charger Installation Cost?
Typical costs for a standard home EV charger installation in the UK range from £800 to £1,500 including the charger, materials, labour, and certification. Factors that affect the price include:
- The distance between your consumer unit and the charger location
- Whether the cable route is through walls, under floors, or underground
- Whether your consumer unit needs upgrading to accommodate the new circuit
- The charger model and smart features you choose
- Whether groundwork is needed for an external mounting post
At Invisiwire, we provide transparent fixed-price quotations with no hidden extras. Your free site survey includes a full assessment of your electrical system and a clear breakdown of all costs before you commit to any work.
Where Should the Charger Be Installed?
The ideal location depends on your parking arrangement, cable route, and the location of your consumer unit. Common installation positions include:
- Garage wall: Protected from weather and close to the consumer unit in many homes
- External house wall: Convenient for driveway parking with a weatherproof charger unit
- Standalone post: Best for properties with parking away from the house
- Carport or canopy: Offers weather protection while keeping the charger accessible
We help you choose the best location during your free survey, considering cable routing, convenience, and aesthetics. The charger must be within reach of your vehicle's charging port, and the cable must be installed safely with proper protection.
Book Your EV Charger Installation with Invisiwire
Invisiwire is a NAPIT approved electrical contractor based near Devizes, Wiltshire, providing professional EV charger installation across Devizes, Calne, Melksham and all surrounding towns. We install all major charger brands, handle supply upgrades if needed, and provide full certification on every installation.
Contact us today on 07936 896965 or request a free site survey online. We will assess your property, recommend the right charger for your needs, and provide a fixed-price quotation with no obligation.
