Difference Between 1 2 3 Tier EV Charging

Difference Between 1 2 3 Tier EV Charging

The difference between 1 2 3 tier EV charging all comes down to the voltage. The higher the voltage the quicker the charging speed. We like to explain the 3 tiers as follows:

  •  1 is a 3 pin plug
  • 2 is a dedicated home charging station
  • 3 is a public “fast charging station”

There are many other differences such as manufacturer, AC or DC, ampage or charging time but general I find the above example keeps it simple to understand.

TIER 1 EV CHARGING

Tier 1 EV charging uses 120 volts, alternating current (AC) and requires a dedicated circuit. This generally means using a standard 3 pin plug. This is why you often see cables coming out of downstairs windows connecting to electric cars to charge them.

Most cars come with tier 1 charging equipment as standard. The cable has a three pin plug that leads to a connector that plugs directly into the vehicles charging socket. Tier 1 charging does not require the installation of any dedicated equipment.

Generally cars take between 8 to 12 hours to charge fully. The downsides are obviously the the charging time and not having a dedicated charging station can cause problems. Bad weather can interfere with charging. It often looks messy and requires to you run a cable from inside the house to your car, often people leave windows open to do this.

TIER 2 EV CHARGING

Level 2 equipment offers charging through a 240V, AC plug and requires installation of home charging or public charging equipment. These units require a dedicated 40 amp circuit.

Home charging equipment (Level 2) is compatible with all electric vehicles and plug-in electric hybrid vehicles. Level 2 chargers have a cord that plugs directly into the vehicle in the same connector location used for Level 1 equipment.

Depending on the battery technology used in the vehicle, Level 2 charging generally takes 4 to 6 hours to completely charge a fully depleted battery. Charging time can increase in cold temperatures. Level 2 chargers are commonly found in residential settings, public parking areas, places of employment and commercial settings.

TIER 3 EV CHARGING
Level 3 charging uses something called CHAdeMO technology also commonly reffered to as fast DC charging. Level 3 chargers generally charge 80% of a cars battery in around 30 minutes.
Not all cars are compatable with level 3 charging, you will have to check with the manufacturer of your car to see if  you can charge using a level 3 charging station.

Difference Between 1 2 3 Tier EV Charging

Thanks for reading our blog about the difference between 1 2 3 tier EV charging. Were trying to make as much information available as possible.

If you have any questions, comments or ideas for future blog posts please let us know. You can contact us using our contact page or you can give us a call on 0800 246 5849.

Thanks for reading!