It’s May 2026, and the shift toward electric vehicles in Surrey is no longer a "future" trend: it’s our current reality. From the leafy streets of Reigate to the busy town centre of Redhill, more and more homeowners are making the switch to electric. However, as the demand for home charging surges, we’re seeing a worrying trend: rushed, DIY, or poorly planned installations that end up costing homeowners more in the long run.
Installing a home charging point is more than just sticking a plug on a wall. It is a significant electrical upgrade to your property. If done correctly, it’s a seamless convenience that adds value to your home. If done incorrectly, it’s a fire hazard, a legal headache, and a potential drain on your wallet.
As your local electrician Redhill experts, ADS Electrical has seen it all. Here are the five biggest mistakes we’re seeing right now with ev charger installation Surrey and, more importantly, how you can fix them before you plug in your new car.
1. Skipping the Electrical Load Assessment
One of the most common myths we hear is that an EV charger is "just another appliance." People think if their home can handle a tumble dryer and a power shower, it can handle a 7kW charger.
The Reality:
A standard 7.2kW charger draws about 32 Amps of continuous power. In many older Surrey homes: especially those built before the 1980s: the main fuse or the consumer unit (fuse board) simply isn’t designed to handle that kind of sustained load alongside modern life. If you’re running the oven, the dishwasher, and a hot tub while your car is charging, you’re asking for trouble.
The Fix:
Before you even buy a charger, you need a professional load calculation. A qualified electrician will assess your "Maximum Demand." If your supply is at its limit, we might need to install a "load management" device that automatically slows down your car’s charging speed when the house is using too much power. In some cases, we’ll work with the DNO (UK Power Networks in our area) to upgrade your main fuse.
2. Choosing the Wrong Charger for Your Lifestyle
In 2026, there are hundreds of chargers on the market. It’s tempting to just buy the cheapest one you find online or the one that looks the "coolest." But not all chargers are created equal.
The Mistake:
Many homeowners buy a basic charger only to realise later that it doesn't work with their solar panels, or it doesn't integrate with their energy provider’s "off-peak" overnight rates.
The Fix:
Think about your future needs. If you have solar panels: or plan to get them: look for a "Solar-smart" charger like the Zappi. These units can be set to charge your car using only the excess green energy produced by your roof. If you just want the fastest charge possible, make sure the unit has a smart app that lets you schedule charging for 2:00 AM when electricity prices are at their lowest. Investing an extra £100 now in a high-quality smart charger can save you thousands in fuel costs over the next five years.
3. The "Handyman" or DIY Installation Trap
We get it: everyone wants to save money. But an EV charger installation is not a Sunday afternoon DIY project. We’ve seen installations where people have used standard 13A sockets (which can melt under the sustained heat of EV charging) or used domestic-grade extension leads draped across a driveway.
The Danger:
Using the wrong cable size or incorrect circuit protection (RCDs) is a major fire risk. Furthermore, EV chargers require specific "Type A" or "Type B" RCD protection to handle DC leakage from the car. If your installer doesn't know the difference, they could be leaving your family unprotected from electric shocks.
The Fix:
Always hire a specialist. EV charging falls under Part P of the Building Regulations. This means the work must be notified to the local authority. When you use a professional electrician Redhill like ADS Electrical, we provide you with an Electrical Installation Certificate (EIC) and handle the building control notification for you. This paperwork is vital if you ever decide to sell your home or need to make an insurance claim.
4. Poor Placement and Ignoring the "Daily Dance"
Where you put the charger matters more than you think. We’ve seen chargers installed at the back of a garage, only for the owner to realize their charging port is on the front-left of their car, requiring them to reverse in at a precarious angle every single night.
Common Placement Mistakes:
- The Trip Hazard: Mounting the charger in a spot where the cable has to cross a public footpath or a high-traffic walkway.
- Weather Exposure: While most chargers are IP-rated, mounting them in the most exposed, wind-swept corner of your house will shorten their lifespan.
- The Reach: Forgetting that you might buy a different EV in three years with the charging port in a different location.
The Fix:
Plan from the car backwards. Park your car where you normally leave it and measure the distance. Aim for a mounting height of about 1.2m to 1.5m. If possible, choose a sheltered spot under a carport or on a side wall. We always recommend "tethered" chargers (where the cable is permanently attached) for pure convenience, but an "untethered" socket might look neater if you don't mind getting your own cable out of the boot every time.
5. Forgetting Earthing and Surge Protection
This is the technical bit that many "cheap" installers skip. Most UK homes use a PME (Protective Multiple Earthing) system. If there is a fault in the street's neutral wire, the body of your car could actually become "live" if it's plugged in.
The Risk:
Without proper "Open-PEN" protection or a dedicated earth rod, touching your car while it’s charging during a fault could result in a fatal electric shock. Additionally, with the sophisticated electronics inside modern EVs, a power surge during a Surrey thunderstorm could fry your car's battery management system: a repair that costs tens of thousands of pounds.
The Fix:
Ensure your charger has built-in PEN fault protection (many modern smart chargers do). If it doesn’t, your electrician must install a separate protection device. We also strongly recommend installing a Surge Protection Device (SPD) in your main fuse board. It’s a small investment that protects both your home and your expensive new vehicle from voltage spikes.
Why Local Knowledge Matters in Surrey
Surrey presents unique challenges. We have a mix of beautiful Victorian properties with sensitive electrical systems and modern developments with complex communal wiring. Whether you are in a terrace house near Redhill station or a detached home in Reigate, the local infrastructure varies.
By choosing a local expert for your ev charger installation Surrey, you aren't just getting someone to drill a hole in the wall. You’re getting someone who understands the local grid, knows the requirements of UK Power Networks, and can ensure your home remains safe and compliant for years to come.
Checklist for a Successful Installation:
- Certified Professional: Are they NICEIC or NAPIT registered?
- Smart Features: Does the charger allow for scheduled and solar charging?
- Warranty: Does the installation come with a guarantee?
- Paperwork: Will you receive an EIC and a Part P notification?
- Future-Proofing: Is the cabling sized correctly if you upgrade to a faster charger later?
Get Your Home Ready for the Future
The move to electric is exciting, but it shouldn't be stressful. By avoiding these five common mistakes, you can ensure that your home charging experience is fast, safe, and cost-effective. Don't leave your most expensive asset: your home: and your new car to chance.
If you are looking for reliable and professional home charging point Surrey services, we are here to help. At ADS Electrical, we specialise in tailored charging solutions that fit your home and your budget.
Ready to upgrade your driveway? Contact ADS Electrical today for a free, no-obligation quote and let’s get your Surrey home ready for the electric revolution.