If you’ve installed EV chargers before, you know they’re not one-size-fits-all. A big point of confusion can be deciding between single-phase and three-phase chargers. Understanding the difference will save you time, hassle, and ensure your customers get the right setup.
Here’s a simple way to think about it: single-phase chargers run on the standard domestic electrical supply, delivering about 7.4kW. They’re perfect for homes with a typical 230V supply. Installation tends to be straightforward and doesn’t require complex wiring.
On the other hand, three-phase chargers use a 400V supply and can provide much higher power—up to 22kW or even more. These are commonly installed in commercial settings or large homes with three-phase supplies. Installing these requires more careful planning because the wiring and distribution boards are more complex.
Why choose three-phase? Because it charges faster, great for busy workplaces or apartment blocks. But remember, they need a suitable three-phase distribution board, and PME protection is mandatory on both types.
Eco Harmony offers a great selection of reasonably priced three-phase distribution boards that make your job easier: 3-Phase Distribution Boards.
To sum it up:
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Use single-phase chargers for most homes.
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Go three-phase for faster charging or bigger sites.
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Always check the site’s supply type before ordering.
Questions about which charger fits best? Just ask!
Explore WCED Products
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All WCED Products — Browse the full range of WCED boards, enclosures, and accessories for domestic, commercial, and industrial EV installs.
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Single Phase Boards — Ideal for home EV chargers, garages, garden rooms, and small-load circuits.
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3 Phase Boards — Perfect for 11kW–22kW chargers, workshops, and commercial high-load installations.
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3 Phase Distribution Boards — Ready-to-install 3-phase boards for commercial or multi-charger setups.
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IP40 Boards & Enclosures — Indoor-rated boards for garages, workshops, and plant rooms.
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IP65 Weatherproof Boards — Outdoor-rated, sealed boards for EV chargers and external installs.
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Other WCED Products — Accessories, replacement parts, modules, and miscellaneous components.
Browse the full WCED range for reliable, installer-friendly EV distribution boards, enclosures, and accessories — suitable for domestic, commercial, and industrial EV installs.
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