When you’re out on a job installing EV chargers, one question that pops up a lot is: “Do I need to fit an earth rod here?” It’s a great question, and the answer isn’t always straightforward because it depends on the specific installation environment and the type of supply you’re working with.
So, let’s break it down. An earth rod is basically a metal rod driven deep into the ground to provide a safe path for electrical faults to discharge. It’s often used when the electrical supply doesn’t give you a good earth connection, which can happen in some older or rural setups.
But here’s the thing: if you’re working with a PME supply — which stands for Protective Multiple Earthing — and you fit the right PME protection device, you might not need an earth rod at all. That’s because PME protection devices monitor the neutral and earth conductors closely. If they detect any fault or dangerous condition, they can disconnect the supply quickly and safely.
This means fewer parts to install, less digging or drilling, and potentially a quicker, cleaner job for you. Plus, earth rods can corrode over time, causing problems down the line, so avoiding them where you can is often a win.
If you want to make your installs safer and simpler, Eco Harmony’s PME protection devices are designed just for this kind of job. You can check them out here: Shop PME Protection Devices.
In summary:
-
Check if your supply is PME — if yes, PME protection devices might eliminate the need for earth rods.
-
If your supply isn’t PME, an earth rod is often essential.
-
Using PME devices can speed up your installation and improve long-term safety.
Got questions about a tricky install? Feel free to reach out — we’re here to help!