Do I need to upgrade my fuse box for an EV charger?
Maybe. A home wallbox needs a dedicated circuit and a consumer unit that is safe to add that circuit to. If the board is full, damaged, or not suitable, the electrician should say so on the quote and should not proceed if they have already said it is unsafe.
We do not publish typical upgrade prices. Get a quote. We pass the enquiry to opted-in OZEV-authorised electricians. We do not promise a number of quotes, a reply time, or a public installer list.
What the charger actually needs
Most catalogue home units are listed at 7.0–7.4 kW. That is a 32 A single-phase circuit on a typical UK house. Two current rows are 22 kW three-phase. The installer designs the protective devices and whether your existing board can take that circuit. They do not clip a charger onto a spare socket. A load-balancing current cap is a setting on the wallbox, not a new board.
How far the charger sits from the fuse box is a separate cable-run question. A long run does not automatically mean a new board. A short run does not automatically mean the board is fine.
When an upgrade comes up
The electrician should write it on the quote if they think the consumer unit needs work. Reasons they will flag include no spare way for a dedicated circuit, a damaged or overcrowded board, or a board they will not add a 32 A EV circuit to.
Checklist of “always replace if it looks like X”, or a share of UK homes that need this are not quoted here. That is their survey, not a ChargerFit rule.
If they already said the board is unsafe, they should stop. That is an installer safety call, not a ChargerFit timetable.
A board that trips when charging starts is a different page: why a charger trips the fuse box. That is a fault, not an upgrade quote.
A consumer-unit change is not the same as DNO notification. The installer still uses the Energy Networks Association path to decide connect-and-notify versus apply-to-connect. An awkward cut-out or a larger supply can need the DNO before anyone energises the new load.
Photos are how they see the board
A photo of the consumer unit with the cover off, and a photo of where the car parks, is usually enough for a first look. They should still confirm it on the day against the real wall.
What to expect from the quote is the list of lines to ask for. Consumer-unit work should be included or excluded in writing. We do not publish a pounds band for that line.
What this means when you get a quote
Send the board photo. If they mention an upgrade, ask what they would change and whether the catalogue unit you want still fits the house as it stands. Catalogue From figures are hardware RRP, not a fitted total.
How it works is the matching path. You book and pay the electrician. There is no ChargerFit SLA on reply time or a number of quotes.
If you are grant-eligible, the grant is a GOV.UK process, not a line we deduct. See who still qualifies. Do not have the charger installed until OZEV has confirmed you are eligible.
