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What Size of Electricity Meter Do You Need to Install an EV Charger?

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actual open electrical panel showing breakers, terminal bars and wiring; actual rear-view installer checking a wall-mounted Model U with electrical panels, input conduit, coiled charging cable and connector in a white cover layout with cyan-black graphics, EV EASY logo and a short Thai heading.

What Size of Electricity Meter Do You Need to Install an EV Charger?

Many people are still unsure whether their home's existing electricity meter can support EV charging.

Today EV Easy explains it simply, so you can choose and use your charger as safely and efficiently as possible.

Each meter size and its use with an EV charger

15(45) meter

  • Handles a current of around ~35A
  • Not recommended for a 7.4kW charger (which draws 32A)
  • Risk of power cuts, voltage drops or the meter tripping when used together with other household appliances

30(100) meter

  • Handles a current of ~75A
  • Suitable for typical homes installing an EV charger
  • Can supply both the charger and household appliances at the same time

In short:

If you will use a 7.4kW (32A) EV charger

  • you should switch to a 30(100) or 5(100) meter, so it can be used safely and at full performance without voltage drops or overloading.

EV Easy recommends:

EV Easy sells and installs a wide range of EV chargers, both portable (Portable Charger) and wall-mounted (Wall Charger)

  • Support both 1-phase and 3-phase systems
  • RCD leakage protection
  • An experienced installation team ready to advise on choosing a meter, running cables and installing correctly to standard

Which charger can your home take?

The right charger depends on your meter size, your existing electrical panel and the distance from the panel to your parking spot — not just your car model. Send photos of your panel and parking spot on LINE and our team will give you a first assessment, or see the four installation options and their pros and cons on our installation service page.

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Ask our team on 093-359-2207 or LINE @eveasy

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