How to Get 40A Charge at Home for Your Tesla?
Charging your Tesla efficiently at home is crucial, not just for convenience, but also for maintaining your vehicle's performance. Let’s dig deeper into the 40A charging requirements, benefits, and the whole setup process.
Why have 40A Charging at home?
With ample Superchargers all around, you might wonder why 40A charging is even needed at home, after all, you are charging overnight and are unaffected by slower charging. But you should be aware of the below benefits of faster charging at home.
- Higher charging per hour: A 40A charger can add up to 30 miles of range per hour of charging, compared to the typical 3-4 miles per hour provided by a standard 120V outlet. This significantly reduces the time needed to fully charge your Tesla.
- Enables long-distance EV travel: While the 40A charger definitely reduces the time it takes to charge your Tesla, it also ensures that overnight home charging is sufficient for long-distance travel, making road-tripping in your Tesla much more convenient and flexible. Here’s a complete guide on how to optimize your charging while on a road trip.
- Improved battery health: Charging at a moderate rate, like 40A, is better for the long-term health of your Tesla's battery compared to the rapid charging speeds of Superchargers. Slower charging reduces heat and stress on the battery, potentially extending its lifespan.
- Lower charging costs: Charging at home during off-peak hours is much cheaper compared to using public charging stations or Superchargers. You can find the real-life data in the blog mentioned above, where the 4,249 mile Colorado trip only cost $257.30 in charging, that’s just 6.06¢ per mile!
- Emergency preparedness: 40A charging ensures your Tesla is always ready to go, providing peace of mind in case of unexpected trips or emergencies.
How to Get 40A Charging at Home?
Now that the why part is sorted, here is the how part - a step-wise guide for achieving the said charging at home.
Step 1: Get the Required Electrical Set-Up
To achieve 40A charging at home, you need a dedicated 240V circuit with a 50A breaker. This setup ensures that your charging station can deliver the necessary power safely and efficiently.
To achieve that you must follow the below steps:
1. Electrical Panel Assessment:
- Check if your home's electrical panel can support an additional 50A circuit.
- If your panel is full or too old, you may need to upgrade it.
2. Professional Installation:
- Hire a licensed electrician to install the new circuit.
- Ensure that the installation complies with local electrical codes and regulations
3. Select a Location:
- Choose a convenient and accessible spot in your garage or near your parking area.
- Ensure the location is within reach of your charging cable.
4. Install the Outlet:
- Have the electrician mount the NEMA 14-50 outlet and connect it to the dedicated 50A circuit.
- Ensure that the connecting wire from the outlet to the electric panel supports 50A charging to avoid overheating.
- Use a weatherproof outlet box if the outlet is installed outdoors.
5. Test the Outlet: Verify the outlet's functionality before connecting your charging equipment.
If you are unsure of which outlet to choose, grab our NEMA 14-50 Weatherproof Power Outlet Box. It’s designed to offer the required 240V/50A connection. It’s a heavy-duty outlet typically used for electric stoves and RVs, making it good for EV charging.
Step 2: Get the Right Mobile Connector Adapter
Once you have tested the outlet, you should move on to gathering the right charging equipment. There are 2 things to consider - the charging connector and the connector adapter. While we will come to the connector a little later, let’s first understand the adapter requirement.
Which Mobile Connector Adapter is Best for You?
The mobile connector adapter is a crucial component of your EV charging setup. It acts as the bridge between your charging cable and the power source, ensuring a secure and efficient connection.
While the outlet box explained in Step 1 only provides you the platform for the required power, the adapter is what transports that power to your mobile connector.
Tesla offers a variety of adapters for different charging scenarios from NEMA 5-20 to NEMA 14-50, however, they are maxed out at 32A.
Keeping this in mind, we have included the NEMA 14-50 Mobile Connector Adapter with our mobile connector. It offers superior cable durability, thanks to using the 17mm wire diameter cable.
Here are its top benefits:
- Thicker Wiring: The wire used is 40% thicker than Tesla's standard 12mm cables, making it more appropriate for heavy-duty use, supporting a maximum current of up to 40A, surpassing Tesla's 32A limit by 25%.
- Enhanced Terminal Protection: Our adapter's end terminals are finished with a high-quality galvanized coating, offering exceptional resistance against corrosion and oxidation.
- Safer Charging: The galvanized coating acts as a protective layer, ensuring your charging experience is uninterrupted and safe, even in the most humid environments, by preventing short circuits and enhancing longevity.
- Innovative Temperature Control Chip: It actively monitors the charging temperature, automatically halts the charge on detecting excessive heat, and safeguards your vehicle against potential hazards.
Step 3: Get the Right Mobile Connector
Next, you need to have the right mobile connector for your 40A EV charging setup.
You must consider the following while picking up the right connector.
- Vehicle Compatibility: Ensure that the mobile connector is compatible with your specific Tesla model.
- Connector Type: Make sure the connector type matches your vehicle’s charging port. Tesla typically has the NACS charging port. If your connector doesn't have the NACS socket, you can use a NACS adapter to plug it in your car.
- Supported Amperage: Verify that the mobile connector supports 40A charging. Not all connectors are designed to handle this level of current, so it's crucial to check the specifications.
- Build Quality: Look for connectors made from high-quality materials that can withstand regular use and exposure to the elements if used outdoors.
- Overcurrent Protection: The connector should have built-in overcurrent protection to prevent electrical faults.
- Thermal Monitoring: Choose a connector with thermal monitoring to avoid overheating during charging.
- Weather Resistance: If you plan to use the connector outdoors, ensure it is weather-resistant to protect against rain, snow, and other elements.
- Plug-and-Play Design: Opt for a connector that is easy to set up and use without requiring complex installation procedures.
- Portability: A compact and portable design makes it convenient to carry and use at different locations.
- Cable Length: Ensure the cable length is sufficient to reach from your outlet to your vehicle comfortably.
- Monitoring Capabilities: Some connectors offer features like charging status monitoring through an app, which can be a useful addition.
While looking for the perfect connector might seem like finding a needle in the haystack, Jowua has taken care of everything for you.
Jowua J1772 Mobile Connector Solution
Jowua has launched the J1772 Mobile Connector Solution, specially designed to help Tesla owners achieve a 40A charge at home.
Here are some of its top features:
1. Compatibility: Works with all Tesla models. You might need to get the right EV adapter if your Tesla has CCS ports. Here’s how you can decide which EV adapter to pick. The included adapter is J1772 to NACS.
2. Durability & Stable Charging: Built with high-quality materials for long-lasting use. The connector has Premium Nickel and Silver-Plated Terminals which are corrosion-resistant and durable, ensuring stable conductivity, and preventing shorts in humid environments like Taiwan.
3. Ease of Use: Simple plug-and-play setup.
4. 40A/9.6kW Exceptional Charging: Equipped with UL-certified high-grade cables, our charger supports up to 40A current, 25% higher than the standard 32A, enhancing charging efficiency and maintaining safety by reducing heat build-up. (Note: European standard is 32A).
5. Scheduled Charging: With built-in Wi-Fi, you can schedule charging during off-peak hours at lower rates. Adjust power settings and monitor temperature conveniently.
6. IP55 Dust and Water Resistant: The connector is fully sealed for dust and water protection.
7. UL94 V-0 Flame Retardant: The connector offers top-tier flame resistance and self-extinguishing functionality.
8. Higher Max Output: Compared to Tesla’s NEMA 14-50 adapter which has a max 32A output, the Jowua adapter, included with the mobile connector has a max output of 40A.
Step 4: Troubleshooting and Maintenance
Finally, following the above 3 steps, you should get the required 40A charging, you must always take precautions while dealing with high-power electric equipment. Here are some common issues and safety measures to undertake:
Common Issues:
- Connection Problems: Ensure all connections are secure and properly aligned.
- Charging Interruptions: Check for power supply issues or potential equipment malfunctions.
- Overheating: Make sure your setup is adequately ventilated and not exposed to excessive heat.
Maintenance Tips:
- Regular Inspections: Periodically check your charging equipment for wear and tear.
- Clean Connections: Keep the connectors and outlets free from dust and debris.
- Professional Checkups: Have a certified electrician inspect your setup annually.
Conclusion
Setting up a 40A station at home for your Tesla can significantly enhance your vehicle’s charging efficiency and your overall convenience.
Jowua’s J1772 Mobile Connector Solution, along with the NEMA 14-50 Weatherproof Power Outlet Box and the included NEMA 14-50 Mobile Connector Adapter, provides a reliable and effective solution for achieving this.
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