Electric Vehicle Charger (EV) Installation Manual

The Electric Vehicle Charger (EV) Installation Manual can be summarized in detail by the topic you want as follows:

1.Charger Type (Charger Types)

In the manual, divide the charging level into 3 main categories by power:

• Level 1 (AC 1-2 kW): Use General Home Lighting (230V)

• Advantages: Easiest to install, no need to improve the lighting system, save equipment cost

• Disadvantages: Very slow charging, suitable for charging left overnight or Hybrid Vehicle (PHEV)

• Level 2 (AC 3-7 kW): It is a popular standard level home-mounted (Wallbox)

• Advantages: Charge faster than Level 1 (about 3-6 hours full for some models), fits daily lifestyle

• Disadvantages: Rewiring required and additional safety equipment installed

• DC Fast (DC 30-150 kW): high speed direct current charging

• Advantages: Fastest (20-60 minutes), usually found by public charging stations

• Disadvantages: The equipment costs very high. It is not popular to install in personal shelters.

2. Safety Devices (Safety Devices)

Installing an EV Charger is not just plugging in, it requires a protective system as follows:

• MCB (Circuit Breaker): Overload and Short Circuit Protection

• RCCB (Residual Current Breaker): Anti-Suction / Leak Light (Very Important, Requires 30mA Size as Image)

• SPD (Surge Protection Device): Prevent voltage surges, such as lightning, to prevent damage to the vehicle's control board

3. Cable Selection and Plug Size (Socket & Wire Selection)

The choice of wire size must be related to the wattage (kW) of the charger 1.Plug and wire size selection table (Socket & Wire Selection)

This table tells the appropriate equipment size by power (kW) for safety of use:

• 1-2 kW power

• Use Outlet Size: 10A

• Recommended wire size: 1.5 mm ^ 2

• 3-3.3 kW power

• Use Outlet Size: 16A

• Recommended wire size: 2.5 mm ^ 2

• 7 kW power

• Use Outlet Size: 32A

• Recommended wire size: 4 mm ^ 2 or 6 mm ^ 2

2. Table of Charger Type (Charger Types)

This table is divided by charging efficiency and speed:

• Level 1 (AC)

• Power: 1-2 kW (Use 230V Home Voltage)

• Level 2 (AC)

• Power: 3-7 kW

• Estimated charging period: 3-6 hours

• DC Fast (DC)

• Power: 30-150 kW

• Estimated charging duration: 20-60 minutes

3. Electrical Formula

From the example in the table below the image:

• Formula: Power (kW) = Voltage\ times Current

• Example: If a 3.3 kW charger is used with a 230V home light

• Calculation: I = 3.3 / 230

• Results: The current will be 14.3 Amps (corresponding to the table's recommendation to use a 16A outlet) 4. Earthing Importance.

It's a particularly emphasized part of the manual because it directly affects safety:

• Good properties: Must have less than 5 Ohms resistance, use copper rod (Copper Rod), and may use salt or charcoal to improve soil quality.

• Advantages: Prevent user suction lights, protect car body and charger, help drain leakage current to soil quickly

5. Type of Charging Head (Charging Connectors)

The image shows various standard charging heads, such as:

• Type 1 / Type 2: For AC charging (Popular Type 2)

• CCS / CCS Combo: For DC Fast Charging

• CHAMMO (CHAdeMO): A common fast charging standard in some Japanese vehicles.

💡 Summary of further recommendations (Important Tipes)

1.Dedicated Circuit: The electric circuit for the car charger should be separated, not mixed with other appliances in the house.

2. Regular Inspection: The access points should be checked regularly because charging the car is a long continuous use of high current. If the connection point is loose, the heat can accumulate until the fire.

The installation should be conducted by an expert electrician only to meet safety standards.