Guide to Choosing an EV Charger for Your Home or Apartment Building

Whether you’re looking to install an EV charger at your private home or in an apartment building, here are the essential steps and questions to consider.

To make informed inquiries about your needs, prepare answers to the following:

• Number of Chargers

  • How many chargers do you need now?
  • Will additional chargers be added later?
  • What charging power do you want?

• Main Fuse Capacity

  • What is the building’s main fuse capacity (in amps)?

• Installation Location

  • Will charger(s) be installed behind the main fuse for each apartment, or on a separate sub electrical panel?
  • How will chargers be shared or distributed (individual vs. shared access)?

• Charging Reports

  • Is there a need to share charging data with the apartment association?
  • Who will handle sharing these reports?

Step 1: Understanding Power Requirements

• Minimum Power: Charging requires at least 1x6A (1.4kW) – sufficient for slow charging.
• Overnight Charging: A 3x6A (4kW) connection can charge many EVs overnight.
• Recommended Power: A 3x16A connection (11kW) allows efficient charging while ensuring other home appliances have power.

Step 2: Choosing Between AC and DC Chargers

• AC Chargers: Great for home use – compact, affordable, and offer semi-fast charging (4-6 hours, depending on the grid and EV).
• DC Chargers: Usually unnecessary for home settings – they are costlier and bulkier.

Step 3: Selecting the Right Charger Power

• Check Your EV’s Specs: Learn your EV’s charging capabilities, including power and phase requirements.
• Futureproofing: If possible, consider a 22kW charger (requires a 3x32A connection) to prepare for future EVs.
• Standard Option: An 11kW charger (3x16A) is generally enough for most EVs.

Step 4: Utilizing Dynamic Load Management (DLM)

• Dynamic Load Management (DLM): Ideal for balancing your home’s electrical load to prevent overloading, DLM ensures that your EV is fully charged by morning, even with limited available power.

Additional Tips

• Charger Power Ratings: The charger’s rating (e.g., 22kW) indicates its max output. Actual power may vary based on your grid and EV.

• Essential Accessories:
  • DLM Systems
  • Current Transformers (CTs)
  • Charging Cables
  • Wall Mounts or Posts
  • Weather Protection for outdoor installations

By understanding these basics, you’re well-equipped to set up a reliable and efficient EV charging system. Happy charging!

If you need any additional information, please contact Morek sales.