Guides
EV charging
guides.
Straight answers on connectors, charging speeds and what actually fits your car. No jargon, no filler.
How-to
Why Is My EV Charging Cable Getting Warm?
Some warmth is normal during EV charging, but excessive heat or a burning smell signals a problem with the cable rating, connection quality, or cable condition. A cable rated below the charge rate will overheat: match the cable's amp rating to your wallbox output Dirty, corroded, or loose connectors concentrate heat at the plug end and need attention Always uncoil the full cable during a session so heat can dissipate along the length
Charging Guides
What Gauge Are EV Charging Cables?
EV charging cables use 6 mm² conductors for standard 7.4 kW home wallbox charging, with different specs for slower or three-phase use. Conductor cross-section (measured in mm²) determines how much current a cable can carry safely without overheating. A 6 mm², 32 A-rated Type 2 cable is the standard choice for most UK home wallboxes. Three-phase 22 kW charging requires a heavier cable rated across all three phases.
Compatibility
Can You Use One Cable for Two Different EVs?
Yes, a single Type 2 cable can charge any two modern EVs with a Type 2 inlet, which covers the vast majority of electric cars sold in the UK. Type 2 is the UK standard connector, shared across brands Older Type 1 cars need a separate cable or adapter DC rapid charging uses tethered charger cables, not ones you carry
How-to
Renting? How to Get an EV Charger Fitted
Renters in England have the right to request an EV charger installation and landlords cannot unreasonably refuse, though cost and end-of-tenancy terms need to be agreed upfront. Put your request in writing citing the relevant regulations and address common landlord concerns proactively Agree in writing who pays, who owns the charger, and what happens when you move out A portable granny charger is a viable alternative if installation is genuinely not possible
How-to
Do You Need Planning Permission for an EV Charger?
Most UK homeowners with off-street parking do not need planning permission to install a home EV charger, as it typically qualifies as permitted development. Listed buildings, conservation areas, and leasehold flats have additional restrictions to check first Building regulations still apply even where planning permission is not required Always use an OZEV-approved installer, especially if claiming a government grant
How-to
Can You Fit an Outdoor Socket for EV Charging?
Yes, you can fit a weatherproof outdoor socket for EV charging, but it must be installed by a registered electrician under Part P of the Building Regulations. Choose a 13A, 16A, or 32A socket depending on your desired charge speed The socket must be IP44 rated or higher and protected by an RCD A portable EV charger gives you flexibility without a full wallbox installation
How-to
Can Your Home Fuse Box Handle an EV Charger?
Most modern UK homes can support a 7kW wallbox without upgrading the consumer unit, but an electrician needs to check your supply rating, spare capacity, and consumer unit type first. Older fuseboards may need replacing before a wallbox can be fitted Smart chargers with dynamic load balancing help where supply headroom is tight OZEV grant installers carry out a full electrical survey as part of the process
How-to
Does an EV Charger Need Its Own Fuse or Circuit?
Yes: a home EV wallbox must be installed on a dedicated circuit with its own breaker, as required by UK wiring regulations (BS 7671). A dedicated circuit prevents nuisance tripping and protects cables from continuous high-current loads Installation must be done by a registered electrician who will issue an electrical installation certificate Granny chargers via a 3-pin socket are a temporary measure only and should use a dedicated socket
How-to
What Is a PEN Fault and Why Does It Matter for EV Charging?
A PEN fault is a failure in the combined protective earth and neutral conductor on a PME supply, which can make a charging car dangerously live. Most UK homes use a PME (TN-C-S) supply, which carries a PEN fault risk if the shared conductor breaks. UK wiring regulations (BS 7671) require a PEN fault protection device on any wallbox connected to a PME supply. A qualified, OZEV-registered installer will assess your supply type and fit the correct protection automatically.
How-to
Do You Need a Smart Meter to Charge an EV?
No, you do not need a smart meter to charge an EV at home, but one is usually required to access the cheaper off-peak electricity tariffs designed for EV drivers. Basic home charging works on any standard supply without a smart meter Off-peak EV tariffs typically need a SMETS2 smart meter for half-hourly billing Smart meters are free to request from your energy supplier via gov.uk
How-to
Can You Charge an EV in a Multi-Storey Car Park?
Yes, charging in a multi-storey is common and safe, though availability, connector types and restrictions vary by site. Most UK multi-storeys with chargers use tethered Type 2 AC units at 7-22 kW Check real-time availability on Zap-Map or the network app before arriving Some older car parks restrict EV charging; check signage and operator policies
How-to
Do EVs Lose Charge When Parked?
EVs do lose a small amount of charge when parked, but it is usually minimal in mild conditions and manageable with simple habits. Cold weather causes higher drain as the battery management system works to maintain temperature Connectivity features and background app activity contribute to standby power use Leaving the car plugged in at home is the easiest way to keep drain irrelevant day to day
How-to
Can You Leave an EV Unused for a Month?
Yes, you can leave an EV unused for a month without harm if you set the battery to around 50-60% charge, leave it plugged in if possible, and disable always-on systems. The 12V auxiliary battery is the most common problem: it can discharge without the main pack noticing Leaving the car plugged in with a charge limit set is the best storage arrangement Check tyre pressures and brakes on your return before driving normally
How-to
What Happens if Your EV Battery Hits 0%?
When an EV's display reaches 0%, the car stops driving, but the physical battery cells are not completely empty: manufacturers build in a protective buffer to prevent genuine deep discharge damage. Propulsion stops, but steering, brakes, and hazard lights keep working briefly Call breakdown recovery and ask for a flatbed, not a flat tow Leaving the battery depleted for extended periods can cause permanent cell damage
How-to
Can You Charge an EV in a Flood or Deep Water?
You should not charge an EV when floodwater has reached your wallbox or a public charger: charging equipment is rated for rain but not submersion, and should be inspected by a qualified electrician before use after flooding. Rain at an outdoor charger is fine; standing floodwater on or around equipment is not Have a flood-affected wallbox inspected before switching it back on A portable charger on a safe indoor socket can bridge the gap while you wait
How-to
Can You Charge an EV From a Generator?
Yes, but only with an inverter generator, and it is best treated as an emergency measure rather than a regular charging solution. Standard non-inverter generators produce unstable power that can cause faults or refusal to charge Connect via a portable granny charger cable for slow trickle charging as an emergency top-up Always run generators outdoors: carbon monoxide is a serious risk in any enclosed space
How-to
Is It Safe to Charge an EV in a Garage?
Charging an EV in a garage is safe when a qualified installer fits a proper wallbox on a dedicated circuit with adequate earthing. EVs produce no fumes during charging, so a closed garage presents no carbon monoxide risk. Battery fire risk is very low in normal use; avoid charging after a collision until the pack is inspected. Inform your home insurer when you install a wallbox, as it counts as a property modification.
How-to
Can You Jump Start a Petrol Car With an EV?
You cannot use an EV's high-voltage traction battery to jump-start another car, but some EVs have a 12V auxiliary battery that can be used carefully, following your owner's manual. Never connect jump leads to the high-voltage traction battery: it is dangerous and voids warranties Some EVs allow their 12V auxiliary battery to be used like any conventional jump-start battery A portable lithium jump pack is the safest and most reliable solution for roadside emergencies
How-to
What to Do if a Public EV Charger Is Broken
Call the helpline on the charger first as operators can often reset units remotely, then find an alternative and report the fault to help other drivers. Try a different bay at the same site before giving up: individual units fail more often than whole sites Use Zap-Map or a network app to find the nearest working alternative quickly Keep a portable charger in the boot as a genuine last resort for emergencies
How-to
What Is EV Charger Roaming?
EV charger roaming lets you use charging networks you have not individually registered with, using a single app or RFID card that works across multiple providers. Roaming uses interoperability protocols like OCPI so networks can recognise each other's credentials You still need the right cable: roaming handles payment, not the physical connection Pricing may differ from a direct network membership, so check before long trips
How-to
What Is Contactless EV Charging?
Contactless EV charging lets you start and pay for a public charging session by tapping a bank card or phone on the charge point reader, with no app or membership card needed. New UK public chargers above 8kW must legally offer contactless payment Contactless tariffs are often slightly higher than network membership rates The cable type you need is unaffected by which payment method you use
How-to
What Is a Heat Pump in an Electric Car?
A heat pump moves warmth from the outside air into the cabin instead of generating heat from electricity, making it far more efficient than a standard resistive heater in cold weather. Heat pumps are most effective in the mild-cold temperatures typical of UK winters, but lose efficiency in severe frost Many systems also warm the battery, helping it accept charge faster in winter Not all EVs include a heat pump: check the spec and trim level before buying
How-to
Why Do Electric Cars Feel Faster Than Petrol?
Electric cars feel faster because they deliver maximum torque from zero rpm, with no gearchanges and near-instant throttle response. Petrol engines must rev through their power band; electric motors push hard the moment you press the pedal. A single-speed drivetrain means no brief power dips between gears during acceleration. Low centre of gravity from the floor-mounted battery helps the car feel planted and composed.
How-to
What Is Regenerative Braking and How to Use It
Regenerative braking recovers kinetic energy back into the battery as you slow down, improving real-world range and reducing brake wear. The motor runs as a generator when you lift off or brake, feeding energy back into the battery One-pedal driving uses strong regen so you rarely need the friction brake pedal in town Regen is less effective when the battery is nearly full or in very cold temperatures