Can My Old Consumer Unit Handle an EV Charger?

Modern & Efficient Home 5 min read

The Problem

You've ordered an electric car - or you're seriously considering one - and now you're wondering: will your fuse box even cope? That old consumer unit in the cupboard has been fine for years, but an EV charger pulls 7kW continuously for hours. It's a valid worry.

Tech Explained

Think of your consumer unit like a water main feeding your house. Each circuit (lights, sockets, cooker) is a tap. An EV charger is like turning on a fire hose - it needs a dedicated supply. Older boards may lack spare ways, have no RCD protection, or use rewireable fuses that can't handle sustained high load. A 7kW charger needs a 32A dedicated circuit; many older installations were never designed for that.

The Thanet Angle

Thanet has a lot of Victorian and Edwardian housing - Margate, Ramsgate, and Broadstairs are full of character homes with ageing electrics. If your consumer unit still has ceramic fuses or a 60A main fuse, an EV charger isn't just a bolt-on. A capacity check and often an upgrade are part of the job for most pre-1990s properties.

ROI & Benefit

Getting your consumer unit EV-ready now means no costly surprises when the car arrives. A capacity check costs a fraction of a failed install. Upgrading to RCBO protection also improves safety and often adds value at sale - buyers increasingly want 'EV-ready' homes.