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A Step-By-Step Guide To Home EV Charger Installation – Watson’s Charging Stations

a man dressed in black installing an EV home charger next to a white car

A Step-By-Step Guide To Home EV Charger Installation

 a man dressed in black installing an EV home charger next to a white car


The surge in electric vehicle (EV) ownership is transforming how we think about personal transportation. In recent years, the EV market has seen an exponential rise. This boom reflects a growing awareness of environmental issues and a commitment to sustainable living. Central to this green revolution is the concept of home EV charging – a convenient, efficient way to power your vehicle.


An EV home charger installation provides the convenience of charging your vehicle overnight while significantly reducing your carbon footprint compared to gasoline-powered vehicles. Moreover, the ability to charge at home eliminates the need for frequent stops at public charging stations, saving time and enhancing your daily routine.


In this blog, we look at the process of selecting the right EV charger for your home and guide you through each step of EV home charger installation. Whether you're a new EV owner or considering the switch, this guide will equip you with the essential knowledge to make an informed decision.


Understanding EV Charging

Electric Vehicle (EV) charging is categorized into three levels, each differing in charging speed and power capacity which impacts your EV driving range and the time it takes to charge your electric vehicle.


Level 1 Charging

This is the most basic form of EV charging, utilizing a standard household outlet (120 volts). It's the slowest method, typically offering about 4-5 miles of range per hour of charging. It's best suited for hybrid vehicles or as a last resort for pure electric vehicles.


Level 2 Charging

A step up, Level 2 chargers operate on higher voltage (240 volts) and are the most common choice for home charging. They dramatically reduce charging time, providing about 20-60 miles of range per hour. This level is ideal for fully electric vehicles and for users who require faster charging.


DC Fast Charging

The fastest available option, DC Fast Chargers are primarily found in public charging stations. They can charge an EV battery to 80% in just 20-30 minutes. However, they are not typically suitable for home installation due to their high power requirements and cost.


The charging level you choose directly impacts how quickly your EV battery charges. For most home users, Level 2 charging strikes the best balance between speed and practicality.


It's also crucial to consider your vehicle's compatibility and charging requirements. Different EVs have varying onboard charger capacities, which can limit the speed at which they can accept a charge.


For instance, even if you have a Level 2 charger, an EV with a lower-capacity onboard charger might not utilize the full speed potential of Level 2 charging. Therefore, understanding your vehicle's specifications is key to optimizing your home charging setup.


Pre-Installation Considerations

Assessing Your Home’s Electrical Capacity

It's crucial to assess your home's electrical capacity. This step ensures that your home can support the additional load of an EV charger without compromising safety or efficiency. Here’s what you need to do:


Check Existing Outlets: Begin by examining the outlets in your garage or wherever you plan to install the charger. Most homes have standard 120-volt outlets, but for a Level 2 charger, you'll need a 240-volt outlet. If one isn’t available, you might need an upgrade.


Understand Your Home’s Electrical Panel: Your home’s electrical panel is the next point of inspection. It’s essential to check if there's enough capacity to add a new circuit for the EV charger. Older homes might have panels that don’t support the extra load, necessitating an upgrade.


Consult with an Electrician: It’s always wise to consult a licensed electrician. They can assess your home’s current electrical system, recommend upgrades if necessary, and ensure everything meets the national and local electrical codes.


Choosing the Best Location for Your Charger

Selecting the right spot for your EV charger is about more than convenience. Consider these factors:


Proximity to Your Vehicle: Ideally, the charger should be installed where it's easy to reach your EV. Think about where your car is usually parked and ensure the cable can comfortably reach the charging port.


Weather Protection: If you’re installing the charger outdoors, ensure it's in a location protected from extreme weather conditions. While most home EV chargers are weatherproof, safeguarding them can extend their lifespan.


Cable Length: The length of the charging cable is also a crucial factor. A shorter cable might mean you need to park your car closer to the charger, while a longer cable offers more flexibility but can be more expensive.


DIY vs. Professional Installation: Weighing the Pros and Cons

DIY Installation: Considerations and Risks

Opting for a DIY installation of your home EV charger might seem appealing due to potential cost savings. However, this approach carries significant safety risks. Electrical installations are complex, and mishandling them can lead to dangerous accidents or property damage. Without professional training and the right tools, the DIY route can be more hazardous than cost-effective.


Professional Installation: Benefits and Assurance

In contrast, professional installation offers numerous advantages. Experts in the field are trained in safety protocols and are well-versed with the latest electrical standards, ensuring a safe and compliant installation.


Importantly, some EV charger warranties necessitate professional installation for validity. Professionals also navigate electrical codes and regulations effortlessly, which can be a daunting task for the uninitiated. While it involves an upfront cost, hiring a professional installer ensures peace of mind, saves time, and guarantees a correctly installed charger, making it a worthwhile investment.


Navigating Local Codes and Permit Requirements

When planning your EV home charger installation, it's essential to understand and comply with local building codes and permit requirements. Local building codes dictate crucial aspects such as the installation site and electrical standards to ensure safety and adherence to regional regulations.


Simultaneously, some areas mandate specific permits for installing EV chargers. These permits are a legal necessity to confirm your compliance with local laws and safety guidelines. Researching these codes or consulting a professional helps streamline this process, ensuring your installation is both safe and legally sound. Balancing the technicalities of installation with regulatory compliance is key to a successful and hassle-free EV charger setup.


Choosing the Right EV Charger

Selecting the right EV charger for your home is a critical decision that hinges on various factors, including charger features, your vehicle's requirements, and personal preferences.




Max Power

Cable Length

Wi-Fi/Smart Features

Installation Type

Grizzl-E Classic


9.6 kW

23.9 ft


Plug or Hardwire

Tesla Wall Connector


11.5 kW

24.1 ft



Emporia EV Charger


11.5 kW

24.3 ft


Plug or Hardwire

ChargePoint Home Flex


9.6 kW

22.6 ft


Plug or Hardwire

Wallbox Pulsar Plus


9.6 kW

23.3 ft


Plug or Hardwire


Tips for Choosing the Right EV Charger

Frequency of Charging

If you drive long distances daily, a higher amperage charger will be beneficial as it charges faster. For infrequent use or shorter commutes, a lower amperage charger may suffice.


Type of Vehicle

Check your vehicle's maximum charging capacity. There's no advantage in opting for a charger that exceeds your vehicle's capacity.


Budget Constraints

Chargers vary in price. Decide on a budget and find the best charger within that range. Remember, a higher price doesn’t always mean better quality, but it often comes with additional features.


Installation Space

The location of the charger can impact your choice. For outdoor installations, prioritize weatherproof models.


Smart Features

Chargers with Wi-Fi or smart functionality allow for remote monitoring and control, which can be useful for managing charging schedules and tracking usage.



Consider investing in a charger with a higher capacity than your current needs, especially if you plan to upgrade your EV or add more EVs to your household in the future.


Step-By-Step Installation Guide for Home EV Charger

Installing a home EV charger can seem daunting, but by following these clear, step-by-step instructions, you can ensure a safe and effective installation. Remember to always consult the manufacturer's instructions for specific guidance related to your charger model.


1. Obtain Permits and Schedule Inspections: Check with your local authorities for required permits before installation. Submit installation plans for approval to ensure compliance with building and electrical codes. After approval, proceed with installation and schedule necessary inspections to certify compliance.


2. Turn the Power Off: Always start by turning off the power at the circuit breaker. This eliminates the risk of electric shock during installation.


3. Select the Right Location: Choose a location close to where you park your EV. Ensure it's within reach of the charger's cable and protected from environmental elements if outside.


4. Mount the Charger Properly: Follow the manufacturer's instructions to mount the charger on the wall. The height should allow for easy access to the charging port of your vehicle.


Mounting the Charger:

  • Choose a wall that is sturdy enough to support the weight of the charger.

  • Ensure the mounting height aligns with your EV’s charging port.

  • Use the mounting template (if provided) for precise drilling.

  • Secure the charger using appropriate screws and wall plugs.


5. Handle Electrical Wiring with Care: Connect the charger to your home's electrical system. This involves matching the charger's voltage with your home's supply. It's best done by a qualified electrician due to the complexities involved.


Wiring and Connection:

  • Use the correct gauge of electrical wire as per the charger's specifications.

  • Ensure that all wiring is properly insulated and free from wear.

  • Connect the wires to the designated terminals in the charger, following color-coded wiring standards.

  • If the charger needs to be hardwired, it’s best to have an electrician complete this step.


6. Connect to the Breaker Panel: Attach the charger to your home's breaker panel. This requires understanding your home's electrical layout and may involve installing a new breaker.


7. Test the Charger: After installation, restore power and test the charger with your vehicle. Look for any warning lights or error messages that might indicate a problem.


8. Inspect and Test Thoroughly: Do a thorough inspection to check if everything is properly installed. Follow the manufacturer’s instructions for any specific testing procedures.


9. Troubleshooting Common Issues: Be prepared for potential issues like fluctuating power or connectivity problems. Your charger's manual should have a section for troubleshooting these common issues.


10. Ensure Compliance and Safety: After installation, recheck all connections. Make sure your installation adheres to local electrical codes for safety and compliance.


By following these steps, you ensure a safer, more efficient installation. Remember, certain steps, especially those involving electrical work, may require professional expertise. Always refer to your charger's specific installation guide for the best results.


Troubleshooting Tips for Common Installation Issues

No Power to the Charger:

  • Check if the circuit breaker is turned on.

  • Ensure all connections are secure and correctly wired.


Charger Not Communicating with Vehicle:

  • Verify that the vehicle is compatible with the charger.

  • Inspect the charging cable for any damage.


Frequent Tripping of Circuit Breaker:

  • This may indicate an overload; check if other large appliances are on the same circuit.

  • Consider upgrading the circuit breaker or redistributing the load.


Fluctuating Charging Speed:

  • Check for loose connections.

  • Ensure the charger is getting the required voltage and amperage.


Post-Installation Tips

Configuring and Utilizing Smart Features

Once your home EV charger is installed, leveraging its smart features can enhance your charging experience. If your charger is equipped with Wi-Fi or Bluetooth capabilities, begin by connecting it to your home network.


This enables you to access features such as remote monitoring and control, which can be particularly useful for managing charging times and tracking energy usage. Many chargers allow you to schedule charging sessions during off-peak hours for cost efficiency. Utilizing these smart functions optimizes your energy usage and integrates seamlessly with your daily routine.


Regular Maintenance and Updates

Maintaining your EV charger is crucial for its longevity and performance. Conduct regular inspections, checking for any signs of damage or wear. Keeping the charger clean from dust and debris is essential; a simple wipe with a dry cloth usually suffices. Additionally, firmware updates are vital.


These updates, typically available through the charger's app or the manufacturer's website, can improve functionality and fix known issues. Regularly updating your charger ensures you are using the latest technology and maintaining high efficiency.


Troubleshooting Common Post-Installation Issues

Even with a perfect installation, you might encounter some common issues like fluctuating power or connectivity problems. First, check your home's electrical system to ensure it's capable of handling the charger's load.


For connectivity issues, try resetting your Wi-Fi connection. If these problems persist, refer to the manufacturer’s troubleshooting guide. In some cases, reaching out to customer support or a professional technician may be necessary. Addressing these issues promptly can prevent them from escalating and ensure your charging station operates smoothly.


Consulting with a Professional for Final Assessment

After installing your home EV charger, it's highly advisable to have a professional electrician or a certified technician inspect the installation. This step is crucial to ensure that the installation adheres to all safety standards and electrical codes.


A professional can thoroughly assess the setup, verifying that all components are correctly installed and functioning as intended. This includes checking the electrical connections, ensuring proper grounding, and verifying that the installation meets local regulations. Their expertise can also provide additional insights into the maintenance and optimal usage of your charger. This final assessment offers reassurance that your charger is safe, efficient, and ready for regular use.



Deciding to install a home EV charger is a wise idea because it provides convenience and saves on public charging station charges. While the DIY approach might seem appealing, the complexities and potential risks involved in EV home charger installation often tilt the scale in favor of professional installation.


Yes, installing it yourself will save you some dollars, but the long-term reliability and efficiency of your charging setup are more important. Overall, while embracing the DIY spirit can be rewarding in many scenarios, entrusting this task to professionals might be the more prudent path for a crucial component of your sustainable lifestyle.


If you’re looking at creating your own at home EV charger setup, get in touch today to get advice from our experts.