A Step-by-Step Guide To Outdoor EV Charger Installation

In a previous blog, I explained how to install an EV charger inside your home. 

But not everyone can install an EV charger inside a garage. That’s because a lot of EV owners park their cars in driveways, carports, or open parking spaces. 

And if that’s you, installing your electric car charger outside is often the only practical option.

Thankfully, modern Level 2 EV chargers are built to handle outdoor conditions. Whether it’s rain, snow, heat, or dust, a weatherproof EV charger can safely charge your car year-round, provided it’s installed correctly.

Now, if you’re curious how to start out with an outdoor EV charger installation and keep it running safely, I’ve explained it all in this blog, including:

• Whether you can safely install an EV charger outdoors
• A simple outdoor EV charger installation process
• What you can DIY and when you should call an electrician
• How to protect your charger from rain, snow, and harsh weather

So, let’s get started. 

Key takeaways

• Level 2 EV chargers can be installed outdoors, but only if they have proper weatherproof rating.
• A hardwired charger is better for outdoor installations because it offers greater weather protection.
• Installing an electric car charger outside follows many of the same steps as an indoor installation, but weatherproofing is very important here. 
• You can handle simple preparation work yourself, but electrical panel connections should always be left to a licensed electrician.

Is outdoor EV charger installation even safe?

The short answer is yes.

In fact, most modern Level 2 EV chargers are specifically designed to be installed outdoors. They’re built to withstand rain, snow, humidity, dust, and temperature changes, making them perfectly safe for outdoor use when installed according to the manufacturer’s instructions and local electrical codes.

That said, not every charger is suitable for outdoor installation. So before buying one, you’ll want to check its weatherproof rating. 

For instance, most outdoor chargers come with NEMA enclosure ratings like NEMA 3R, NEMA 4, or NEMA 4X enclosure rating. This indicates how well the charger is protected against rain, dust, and other outdoor conditions.

Generally speaking, the higher the rating, the better suited the charger is for harsher environments.

Also, you’ll need to think about where the charger will be installed. For instance, your installation might be on:

• An exterior garage wall
• A driveway wall
• A carport
• A detached garage
• A parking pad beside your home

Each area is a little different, but the installation process is largely the same. 

Pro tip: Even though outdoor chargers are weather-resistant, installing one under a roof overhang or inside a carport can offer extra protection from direct sunlight, heavy snowfall, and driving rain.

What do you need before installing an outdoor EV charger enclosure?

While the exact materials will depend on your home’s layout and the EV connector type you buy, here are the most common components you’ll need for an outdoor EVSE installation.

How can outdoor EV charger installation be done at home?

For starters, installing an electric car charger outside follows many of the same steps as installing one inside your garage.

The main difference here is that you’ll need to ensure the charger, wiring, and electrical connections are properly protected from rain, dust, snow, and other outdoor conditions.

Also, while you can DIY some of the work, the final electrical connections should always be handled by a licensed electrician to ensure safety and code compliance.

Overall, here’s how you can install an outdoor EV charger for home: 

Step 1. Choose the right installation location

The first thing you’ll do is decide where you want to install the charger.

Ideally, you should pick a location that’s close to where you normally park your EV. This makes charging more convenient and prevents you from stretching the charging cable every time you plug in.

Here are a few things you’ll want to check:

• Distance from the electrical panel: The closer the charger is to your panel, the lower your EV charger installation cost will usually be because less wiring is required.
• Cable length: Make sure the charging cable can comfortably reach your EV’s charging port. 
• Weather protection: If possible, install the charger under a carport, awning, or roof overhang. Although outdoor chargers are designed for the weather, a little extra protection can help extend their lifespan.
• Wall strength: Make sure you’re mounting the charger to a solid wall or another sturdy surface that can support its weight.

The right location can save you both installation costs and everyday inconvenience.

Step 2. Check your home’s electrical capacity

Next, you’ll need to make sure your home’s electrical system can support the new charger.

Here’s what you’ll typically check:

• Electrical panel capacity: Confirm that your panel has enough capacity for a dedicated EV charging circuit.
• Available breaker space: You’ll need room for a new double-pole breaker.
• Electrical load: Calculate your home’s total electrical demand to see if adding an EV charger will overload the panel.

Pro tip: Even if your panel is already close to its limit, don’t assume you automatically need a panel upgrade. A load management device like simpleSwitch can safely balance your home’s electrical load and help avoid a costly electrical service upgrade.

Step 3. Install the conduit and wiring

Once you’ve confirmed your electrical capacity, it’s time to run the wiring.

Since this is an outdoor EV charger installation, protecting the wiring is just as important as protecting the charger itself.

This step is mostly handled by licensed electricians. Here’s what happens here:

• Run electrical conduit: Outdoor wiring is usually installed inside PVC or metal conduit to protect it from moisture, sunlight, and accidental damage.
• Install weatherproof fittings: Outdoor-rated connectors and junction boxes help keep water away from the electrical wiring.
• Trench the conduit (if needed): If you’re installing the charger on a detached garage or a carport away from the house, the conduit might need to run underground.

Step 4. Mount the charger

With the wiring in place, it’s time to install the charger itself. Here’s what you’ll do:

• Securely mount the charger to the wall.
• Make sure it’s installed at the height recommended by the manufacturer.
• Leave enough space around the charger for ventilation and easy cable management.
• Secure the charging cable so it doesn’t rest on the ground when not in use.

If you’re installing the charger in an open driveway, you’ll also want to install a small bollard or protective barrier. This will protect the charger in case the vehicle accidentally backs into it.

Step 5. Make the final electrical connections

The final installation involves:

• Installing the correct double-pole breaker.
• Connecting the charger to the dedicated circuit.
• Completing all grounding and bonding connections.
• Labeling the new EV charging circuit inside the electrical panel.

These connections need to comply with your local electrical code. You should never do it unless you’re qualified to work inside an energized electrical panel.

Step 6. Test the charger and schedule the inspection

Once everything is connected, it’s time to power up the system. Here’s what you’ll do:

• Turn on the breaker.
• Verify the charger powers up correctly.
• Plug in your EV and perform a test charge.
• Check the charger’s app or indicator lights to make sure everything is operating normally.

If your local authority requires an inspection, this is also when the inspector will verify that the installation meets all applicable electrical and building codes.

Step 7. Set up the charger

Finally, you’ll spend a few minutes getting familiar with your new charger. Depending on the model you’ve purchased, this can include:

• Connecting the charger to Wi-Fi.
• Setting charging schedules.
• Monitoring energy usage.
• Adjusting charging limits.
• Installing firmware updates through the companion app.

Once that’s done, you’re all set. You can now charge your EV conveniently at home, whether it’s parked in your driveway, beside your house, or under your carport.

In short, here’s how outdoor EV charger installation is done:

Outdoor EV charger installation: What can you DIY and what should you leave to an electrician?

As I mentioned earlier, you can definitely DIY some parts of an outdoor EV charger installation.

But when it comes to electrical work, it’s always best to hire a licensed electrician. After all, you’re working with a dedicated 240V circuit, and even a small mistake can create a serious safety hazard.

Overall, here’s what you can do yourself and when it’s best to call in a professional: 

What you can DIY

• Choose the installation location: Decide where you want the charger installed based on where you usually park your EV.
• Prepare the mounting area: Mark the wall, locate studs, and clear the workspace before installation.
• Dig a trench (if needed): If the wiring needs to run underground to a detached garage or carport, you can dig the trench after underground utilities have been marked.
• Install cable management accessories: Cord hooks or cable organizers are simple DIY additions that help keep your charging cable off the ground.
• Clean up after installation: Paint exposed conduit, patch small holes, or tidy the installation area.

What you should leave to an electrician

• Working inside the electrical panel: Installing breakers and making live electrical connections should never be a DIY project.
• Running the dedicated charging circuit: The wire size, breaker, and installation must meet local electrical codes.
• Grounding and bonding: Proper grounding is essential for safely using an outdoor charger.
• Permits and inspections: Electricians usually handle permits and make sure the installation passes inspection.
• Electrical troubleshooting: Load calculations, voltage testing, and diagnosing electrical issues require professional expertise.

5 things to check before installing an electric car charger outside

Before you install an outdoor EV charger, there are a few things I suggest you check first, such as: 

1. Your EV charger is rated for outdoor use

Not every EV charger is designed to sit outside year-round. So, before buying one, check that it is specifically approved for outdoor installation and carries a suitable weatherproof rating.

2. The charger enclosure can handle weather exposure

Even though outdoor chargers are built to handle the elements, a little extra protection never hurts.

If possible, install the charger under a carport, roof overhang, or awning. This helps reduce direct exposure to sunlight, heavy rain, and snow, which can help keep the charger and cable in better condition over time.

3. The charging cable can reach your EV

Before mounting the charger, park your vehicle where you normally would and make sure the cable can comfortably reach the charging port without stretching across walkways or driveways.

4. Your electrical panel can handle the extra load

Your panel needs enough capacity for a dedicated Level 2 charging circuit.

Note: If the panel is already close to its limit, don’t assume you’ll automatically need a full panel upgrade. An electrician can do a load calculation, and in many cases, an EV energy management system can allow you to safely use your home’s available power.

5. You have all the necessary local permits 

Many cities require a permit for installing 2 EV charger, whether indoors or outdoors.

Now, although electricians handle all the paperwork, I suggest you confirm this before the work begins.

Conclusion

By now, I’m sure you have a much better understanding of how outdoor EV charger installation is done.

As you can see, installing an electric car charger outside isn’t very different from installing one inside your garage. The biggest difference is making sure the charger, wiring, and electrical components are properly protected from the weather.

Also, while you can handle some of the preparation work yourself, it’s always best to leave the electrical connections and panel work to a licensed electrician.

Want to avoid an expensive electrical panel upgrade?

You can get in touch with us!

At simpleSwitch, our EV energy management systems help safely install Level 2 EV chargers by automatically balancing power between the charger and other high-power appliances in your home.

Simply put, it’s an easier and more affordable way to prepare your home for EV charging without unnecessary electrical upgrades.

FAQs about outdoor EV charger installation

Can you install an EV charger outside?

Yes, absolutely.

In fact, most modern Level 2 EV chargers are specifically designed for outdoor installation. They’re built to withstand rain, snow, dust, humidity, and changing temperatures, provided they’re installed correctly and have the appropriate weatherproof rating.

Is it safe to charge an EV outside in the rain?

Yes, charging EV in the rain is safe.

EV chargers and charging connectors are designed with multiple built-in safety features that prevent electricity from flowing until a secure connection is made between the charger and your vehicle.

Is a hardwired or plug-in charger better for outdoor installation?

Both options work, but a hardwired charger is generally the better choice for outdoor installations.

Since it’s permanently connected to your home’s electrical system, there are fewer exposed electrical connection points. This provides better protection against moisture and weather, while also reducing the chances of someone accidentally unplugging the charger.

How much does outdoor EV charger installation cost?

The total cost depends on your home’s electrical setup and where you plan to install the charger.

On average, homeowners can expect to spend anywhere from $900 to $3,500+ for a typical outdoor Level 2 charger installation.

Can I install an outdoor EV charger without upgrading my electrical panel?

In most cases, yes.

You can install a Level 2 charger by using an energy management device like simpleSwitch that monitors your home’s electrical load and balances power between EV charger and high-power appliances.