An Electrician's Guide to Home EV Charger Installation

Charging an electric car at home is dramatically cheaper than charging at a public station, and on a smart energy tariff it can drop to a few pence per kilowatt-hour overnight. The catch is that you need a properly installed 7kW charge point: a domestic socket isn't safe for the load, isn't certified for outdoor use, and won't integrate with your tariff. This guide walks through what you need to know before booking an EV charger installation in Norfolk and East Anglia.

Why Home-Charge an EV?

Public chargers are convenient on long journeys but expensive day-to-day. The economics flip the moment you can plug in at home overnight.

• Cost per mile: A 7kW home charger on a smart EV tariff (Octopus Intelligent, OVO Drive Anytime, etc.) drops the cost per mile to about a third of a petrol equivalent, and a tenth of a public rapid charger.
• Convenience: Plug in when you get home, unplug full each morning. No queueing, no fiddling with apps, no contactless taps.
• Battery health: Slower 7kW charging is gentler on the battery than 50kW+ rapid charging, helping extend long-term capacity.
• Resale and rental value: A home with a working EV charger adds appeal to the next buyer or tenant. Drive-up charging is now expected on most newer property listings.

Choosing the Right Charger

We install 7kW units from a small selection of brands we trust to last and integrate cleanly with smart energy tariffs:

• Zappi: Strong solar integration if you have panels. Good app. Built in the UK.
• Ohme: Best-in-class smart-tariff integration. Works seamlessly with Octopus Intelligent.
• Hypervolt: Sleek design, well-built, very reliable. Good if aesthetics matter.
• Wallbox Pulsar: Compact, cost-effective, works with most major tariffs.

We'll talk through your car, your typical mileage, your tariff and where you want to mount the unit before we recommend one. There's no upsell, different cars and homes suit different chargers.

What Happens on Install Day

A typical home install is a 3 to 5 hour job, all done in a single morning or afternoon visit. Here's what we do.

• Confirm the position: We agree the exact spot for the charger, the cable routing, and where the cable will exit the house. This is the only decision that's hard to change later, so we take time on it.
• Run the cable from the consumer unit: We add a dedicated RCBO-protected circuit straight from your fuse board to the charger. Cable is clipped neatly along internal walls or run through trunking where it'd be visible.
• Mount and wire the charger: The unit is fixed to the external wall, weather-sealed, and wired up. We test the earth bonding and the RCD before energising.
• Commission and pair: We test the charger end-to-end, pair it with your phone, set up your tariff schedule if you want, and walk you through the app.
• Certificate and notify building control: An Electrical Installation Certificate is emailed to you, and the install is notified to building control via NAPIT for free.

Smart Tariffs and Auto-Charging

The reason a 7kW home charger pays itself back so quickly is the smart energy tariff that runs alongside it. The biggest UK tariffs are:

• Octopus Intelligent Octopus Go: 6 hours of cheap-rate electricity overnight, with the charger automatically scheduling around it. Around 7p per kWh at the time of writing.
• OVO Drive Anytime: Similar idea, slightly different rate structure.
• EDF GoElectric: Off-peak rates between midnight and 5am.

Most of our customers move to one of these the same week they get their charger fitted. We'll show you how to register and pair the charger with your account, and a typical EV running cost drops to around 2p per mile.

Cost Guide

Most domestic 7kW EV charger installs land between £900 and £1,500 supplied and fitted. The exact price depends on:

• Cable run distance: The further the consumer unit is from the parking space, the more cable and more time on site.
• Routing complexity: A run through a single internal wall is straightforward. Multiple wall passes, lofts, or cellar runs add time.
• Load management: Some homes need a Solar iBoost or load monitor so the charger doesn't trip the main fuse when other appliances are running. £100–£200 add-on if needed.
• Consumer unit upgrade: If your existing fuse board can't safely take a new high-current circuit, we'd quote a board replacement alongside the charger install (£700–£1,000).
• The charger itself: Zappi, Ohme, Hypervolt and Wallbox vary by £150 to £300 between models.

Frequently Asked Questions