With the chargers we install, no. Most modern EV chargers — including the Myenergi Zappi, Ohme Home Pro, and Hypervolt Home 3.0 — have built-in PEN fault detection technology. This eliminates the need for an external earth rod.
What is an earth rod? — An earth rod is a copper rod driven into the ground outside your property to provide an alternative earth path. Older EV chargers without PEN fault detection required this as a safety measure. It meant digging a hole, driving in a metal rod, and running extra cabling — adding cost, time, and an unsightly feature to your property.
PEN fault detection — This built-in technology continuously monitors the supply neutral and protective earth conductor. If it detects a fault, it disconnects the charger within milliseconds. This provides the same level of safety as an earth rod without any external installation.
When an earth rod is still needed — Some older or budget charger models may still require one. If you have a specific charger in mind, we can confirm during a site survey. We always recommend chargers with built-in PEN fault detection as the cleaner, safer solution.
All our installations comply with BS 7671 wiring regulations and IET guidance for EV charging.