If you’re an installer working with EV chargers in the UK, you’ve probably heard the term PME protection thrown around — but what exactly is it, and why should you care? Let’s break it down in simple terms.
PME stands for Protective Multiple Earthing. It’s a common way UK electrical supplies are designed to keep people safe by connecting the neutral and earth wires at multiple points. This setup helps prevent electric shocks and equipment damage.
Sounds good, right? But here’s the catch — if something goes wrong, like a broken neutral conductor, it can create a dangerous situation where the earth becomes “live.” That’s where PME protection devices come in. They monitor the neutral and earth connections continuously and can disconnect the supply instantly if they detect a fault, protecting both the user and the equipment.
For EV chargers, this protection is essential. Many chargers do not have built-in PME monitoring, meaning installers need to fit external PME protection devices to stay safe and compliant with UK wiring regulations (BS7671).
At Eco Harmony, we specialise in PME protection devices designed especially for EV charger installations — whether single-phase or three-phase. Our devices help you deliver safe, reliable installs quickly, without the hassle of fitting earth rods or extra earth stakes.
Here’s why PME protection matters for your installs:
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Safety: Protects users from electric shocks caused by faults in PME supplies.
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Compliance: Meets BS7671 and other UK electrical standards.
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Simplicity: Avoid the need for earth rods or complex earth work on PME supplies.
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Reliability: Reduces risk of charger downtime or damage.
You can explore our range of PME protection products here: PME Protection Devices.
In summary, PME protection devices are a must-have for EV charger installers working in the UK. They make your job easier, keep your customers safe, and ensure your work passes inspection.
Got questions about PME or need help choosing the right product? Just get in touch — we’re here to help every step of the way.