What is involved in installing a home EV charger?
A fixed electrical installation, not an appliance — which is why it requires a qualified installer, notification to the network operator, and an assessment of whether your supply can actually take it.
What determines feasibility:
Your main fuse rating. Most homes have a 60, 80 or 100 amp supply. A 7 kW charger draws around 32 amps, and whether that fits alongside a shower, oven and heating depends on the existing load. This is the constraint that stops installations, and the answer is frequently a load-managed charger rather than an upgrade.
Load management, where the charger monitors the incoming supply and reduces charging when household demand rises. Widely used and usually cheaper than uprating the supply.
Consumer unit capacity and condition, since a dedicated circuit with appropriate protection is required.
Earthing arrangement. This is the technical point most homeowners never hear about: many UK homes use a PME earthing arrangement, which under specific fault conditions can make exposed metalwork outdoors dangerous. Chargers must therefore include integrated open-PEN protection, or an earth rod must be installed. A compliant modern charger handles this internally.
Cable route and distance, since long runs need larger cable.
Off-street parking, without which home charging is generally not possible — and trailing cables across a pavement create liability and are prohibited by many authorities.
What the regulations require:
A dedicated circuit with appropriate residual current protection of the correct type, since EV charging can produce DC fault currents that standard devices do not detect.
Smart functionality, required for new installations, including default off-peak charging times and randomised delay.
Notification to the distribution network operator, which is the installer's responsibility.
Certification, which you should receive and keep.
Practical points: tethered versus untethered cable; positioning for both current and future vehicles; weather rating; whether it supports solar diversion; and whether it reports to your energy tariff for cheap-rate charging.
Grants exist for specific groups, notably renters and flat owners.