Eliminating confusion with electric cars, smart charging and the NEC 80% rule

There are many things to consider and consider when installing charging equipment for electric vehicles. For example, you will need charging points, taps and circuit breakers. Then there is the question of liability. Who is really responsible for the electrical system?

What is the National Electrical Code (NEC)?

In the U.S., the NEC contains useful instructions for charging electric vehicles; the NEC began as a very broad description of how electric systems are designed. It did not cover installation and operating instructions, especially with regard to charging electric vehicles.

Today, it has moved on, and the NEC has been adopted in all 50 U.S. states and has become one of the most important benchmarks for the design, installation and testing of electrical equipment for human protection.

Why the NEC standard is important for electric vehicle charging tasks

So, how has the NEC standard played a key role in the safe installation and operation of electric vehicle charging projects - the NEC has a new section specifically describing how to install electric vehicle charging stations and power sources (EVSE)?

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Installation of equipment and devices related to electric vehicle installation and charging of electric vehicles, outside the electric vehicle, connecting the electric vehicle to the power source in a conductive or inductive manner.

So, this is a big suggestion and may seem a bit confusing. What the NEC is trying to say, however, is that Part 625 of the Code describes the criteria for connecting electric vehicles to charging stations.

This is especially important when designing charging stations, parking lots, or other places to charge electric vehicles.

You don't know what equipment will be used. You need to determine what equipment works and strictly follow the NEC's instructions.

Circuit breakers rated at 80% and 100%

The NEC codes are huge. Fortunately, we're not interested in all that!

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Particular attention is paid to the sections dealing with electric vehicle charging stations, which refer to sections 625.40 and 625.42, which describe the application rules for electric vehicles. Section 625.40 specifies that each outlet used to charge an electric vehicle must be connected to a separate branch circuit. A branch circuit is an electrical circuit that extends beyond the last switch. The branch circuit begins at the junction box and ends at the EVSE (charging station).

By 2014, the NEC required each charging station to have a specific 100% circuit; Supr a-or However, the rule was changed in 2014 because charging stations generally do not require full power. This led to an additional section 625.42 with revised instructions.

The 80% rule and why it is important for charging electric vehicles

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Section 625.42 describes how to evaluate electric vehicle charging. This is important if you plan to install more chargers than are technically .possible.

Intermittent charging means that the maximum current will be maintained for more than 3 hours. Intermittent thus refers to everything else. In other words, less than 3 hours.

This is the hardest thing to detect.

If all EV loads are intermittent, you do not need to worry about HyperCommoder, just set the switch to 100% load. However, if the EV loads are continuous, the 80% rule must be followed. It states that the continuous load should be 20% below the switch capacity.

Why would a breaker be overloaded by charging stations?

If EV loads are to be treated as continuous loads, how can EV power be regulated in excess of 80% of the table breaker capacity? Isn't that a violation of the Rules?

No. It is not a violation of the Rules. The following paragraphs are important here.

Paragraph 625.42 states, Paragraph 625.42 also states.

If an automatic load control system is used, the maximum load and capacity of the equipment on the line shall be the maximum load permitted by the automatic load control system 80% rule is always followed.

To select a circuit breaker for a fixed load, you must determine the load on each branch circuit and calculate the current required.

However, it is not possible to get 100%. You must always follow the rule of 80%.

To summarize.

Hopefully, this article has clarified all the ambiguities related to electric vehicle charging. In conclusion, let's reiterate the following key points

• Charging electric vehicles can be confusing, especially when it comes to understanding standards, best practices and testing responsibilities.
• In the U.S., the latest edition of the NEC includes a detailed section on electric vehicle charging installation and maintenance - Section 625.
• Sections 625.40 and 625.42 describe installation requirements for constant and intermittent loads.
• The 80% rule must be followed when charging electric vehicles.
• If the load is controlled by smart charging software, 40% more electric vehicles and charging points may be installed at each location.
• Load management allows you to exceed the number of charging points on the switch.

The Future of Electric Cars and Smart Charging: Clearing Up the Confusion and Accelerating Adoption

Electric cars have been around for nearly a decade now, but they are still not as mainstream as their gasoline counterparts. One of the biggest hurdles facing electric cars is the lack of infrastructure to support them. However, with the advancement of smart charging technology, this hurdle is now being overcome, and the future for electric cars looks bright. In this article, we will look at the key features and advantages of smart charging and how it is accelerating the adoption of electric cars.

The Advantages of Electric Cars

Before we dive into smart charging, it is important to address the elephant in the room: why switch to electric cars in the first place? Here are some of the key advantages:

• Electric cars are environmentally friendly and help reduce pollution levels.
• Electric cars have lower running costs compared to gasoline cars, as electricity is cheaper than gasoline in most countries.
• Electric cars offer smoother and quieter rides due to their electric motors, and they have fewer moving parts which means less maintenance.
• Electric cars offer an improved driving experience with instant torque and faster acceleration compared to gasoline cars.

The Challenge of Smart Charging

While the advantages of electric cars are clear, a major area of concern is the infrastructure required to support them. Unlike gasoline cars, which can simply be refueled at a gas station in a few minutes, electric cars require charging, which can take several hours. In addition, every electric car needs a charging station to recharge its batteries, and this infrastructure is not yet adequately developed in most countries.

Another issue is that charging electric cars requires a significant amount of power, and if many electric cars are charging at the same time, the power grid can become overloaded. This creates a challenge for utility companies and governments who must ensure that the power grid can handle the increased demand for electricity.

The Solution: Smart Charging

Smart charging is a relatively new technology that addresses the challenges of electric car charging. Smart charging refers to a system in which electric cars can communicate with the power grid and automatically adjust their charging based on demand and pricing data. This means that electric cars can charge gradually during off-peak hours when the electricity is cheaper and there is less demand on the power grid.

Smart charging can also help manage the load on the power grid by distributing the charging of electric cars more evenly, reducing the risk of overloading the grid. Lastly, smart charging can allow for the integration of renewable energy sources, such as solar and wind power, which can further reduce the carbon footprint of electric cars.

The Benefits of Smart Charging

Smart charging offers several key benefits, including:

• Cost savings for electric car owners, as smart charging can take advantage of cheaper electricity rates.
• Increased convenience for electric car owners, as they do not have to worry about manually adjusting their charging times. Smart charging takes care of this automatically.
• Reduced impact on the power grid, by distributing charging more evenly and preventing overloading.
• Integration of renewable energy sources, which can further reduce the carbon footprint of electric cars.

The Future of Electric Cars

With smart charging technology, the future of electric cars looks bright. As more and more countries adopt smart charging systems, electric car ownership will become more mainstream and accessible. This will drive down the cost of electric cars and lead to the development of more advanced electric car technology, such as faster charging times and longer ranges.

Furthermore, as electric cars become more popular, the demand for renewable energy sources will increase, leading to more investment in solar and wind power. This will help reduce greenhouse gas emissions and contribute to a more sustainable future.

Conclusion

In conclusion, smart charging is the key to unlocking the full potential of electric cars. As electric car adoption increases, so too will the adoption of smart charging systems, which will make owning and operating an electric car more convenient and cost-effective. With the benefits of reduced pollution, lower operating costs, and improved driving experiences, the future of electric cars has never been brighter!

Smart Charging for Electric Cars: Essential Tips for Adhering to the NEC 80% Rule

If you own an electric car, you probably already know that charging it requires some level of planning and foresight. Unlike traditional gasoline-powered vehicles, electric cars require a reliable source of power to keep them running, and that means finding a charging station that's compatible with your car's charging protocol, voltage, and amperage.

But did you know that there are also safety regulations that need to be considered when charging an electric car? Specifically, the NEC 80% rule, which requires that electric vehicle supply equipment (EVSE) be limited to 80% of its circuit rating to prevent overload and reduce the risk of electrical fires.

What Is the NEC 80% Rule?

The NEC 80% rule is a safety regulation established by the National Electrical Code that requires electric car charging equipment to be rated at no more than 80% of the circuit's capacity. For example, if you have a 50-amp circuit, your EVSE can be rated no higher than 40 amps for safe operation.

By adhering to the NEC 80% rule, you can prevent dangerous electrical conditions such as overheating, short circuits, and power surges that can cause damage to your car and put you and other drivers at risk of injury or even death.

How to Adhere to the NEC 80% Rule

If you're new to electric car ownership or are planning to install an EVSE at your home or business, it's essential to understand how to adhere to the NEC 80% rule for safe and reliable charging. Here are some tips to get you started:

• Understand the electrical capacity of your circuit. Before installing an EVSE, you need to know the amperage rating of your circuit and the maximum capacity of your electrical panel. This information will help you determine the appropriate size of your EVSE to ensure safe and effective charging without risking overload or fire hazards.
• Schedule regular maintenance and inspections. Just like any other electrical equipment, EVSE requires regular maintenance and inspections to ensure proper operation and compliance with safety regulations. Be sure to schedule annual inspections and any necessary repairs or upgrades to ensure your EVSE is functioning optimally and safely.
• Invest in high-quality charging equipment. Choosing a reliable and high-quality charging equipment can help you comply with the NEC 80% rule and ensure safe and efficient charging in any situation. Look for charging stations that offer built-in safety features such as overload protection, power surge protection, and short-circuit prevention systems.
• Check local regulations and codes. Depending on where you live or work, there may be additional safety regulations and codes that need to be followed when installing an EVSE. Be sure to check with your local government or electrician to ensure you're in full compliance with any local rules and regulations.
• Use charging timers and apps. To help maximize the efficiency of your EVSE and adhere to the NEC 80% rule, consider using charging timers and mobile apps that can help you schedule charging sessions during off-peak hours when electricity rates are lower and demand on the circuit is lower.

The Benefits of Adhering to the NEC 80% Rule

While adhering to the NEC 80% rule may seem like an inconvenience or an unnecessary expense, it can actually provide numerous benefits in terms of safety, reliability, and efficiency. Here are a few key takeaways:

• Reduced risk of electrical fires and other dangerous conditions
• Improved energy efficiency and cost savings
• Increased charging speed and reliability
• Longer lifespan for your EVSE and other electrical equipment
• Peace of mind knowing you're following safety regulations and protecting yourself, your car, and other drivers from potential harm

By following these essential tips and adhering to the NEC 80% rule, you can ensure safe, reliable, and efficient charging for your electric car. Whether you're a new electric car owner or a seasoned pro, always prioritize safety and compliance with safety regulations to enjoy the many benefits of clean, renewable, and cost-effective electric transportation.

Simplifying the Smart Charging Process for Electric Cars: NEC 80% Rule Unpacked

Man, it’s a great time for electric vehicles (EVs). From Tesla Model 3 to Nissan Leaf, the market is getting flooded with electric cars that are not only more efficient but have aesthetically pleasing designs too. However, one of the biggest hurdles that the EV industry is facing is finding effective ways to charge these vehicles on the go. Sure, electric cars are fuel-efficient and have little to no emissions, but if we don’t have proper charging infrastructure in place, their widespread adoption will remain a challenge.

To overcome this challenge, the industry is working on ways to improve charging infrastructure. Enter the NEC 80% rule, a new standard in smart charging that’s designed to improve the charging process for electric vehicles. In this post, we’ll take a deep dive into the NEC 80% rule and see how it simplifies smart charging for electric cars.

What is the NEC 80% Rule?

The NEC 80% rule is a charging standard that limits the maximum charging capacity of an electric vehicle to 80% of its battery’s capacity. In simpler terms, if a vehicle has a battery capacity of 100kWh, it can be charged up to a maximum of 80kWh.

Let us break down the charging process with examples of charging an EV with the NEC 80% rule in place. Suppose you have an electric vehicle with a battery capacity of 100 kWh, and its current battery level is at 20%.

• If you want to charge it to 80%, it will take 48 minutes.
• If you want to charge it to 50%, it will take only 16 minutes as compared to the 80% charge.
• If you want to charge it to 100%, it will take 96 minutes.

As you see, the NEC 80% rule limits the power intake of the EV so that it will not overheat or damage the battery. By keeping the battery charge level between 20% and 80%, the rule promotes safe and speedy charging without risking battery damage. This results in an optimal charging experience for both the end-user as well as the EV charging infrastructure.

Advantages of the NEC 80% Rule

The NEC 80% rule is designed to deliver a multitude of advantages that make it a compelling solution for smart charging infrastructure. Here are some of the key benefits:

• Optimal Battery Health: The NEC 80% rule restricts the power intake during charging, ensuring that the battery never gets fully charged. By preventing overcharging, it prolongs the battery’s lifespan and ensures optimal battery health.
• Improved Charging Speed: A charge from 0% to 80% under the NEC 80% rule takes significantly less time as compared to charging from 0% to 100%. This results in improved charging speed, allowing EV owners to charge their vehicles faster and get back on the road quickly.
• Safe and Secure Charging: The NEC 80% rule reduces the risk of battery damage by preventing overheating. It maintains the ideal charging temperature, ensuring that the EV charges safely without damaging the infrastructure.
• Lower Costs: By promoting an optimal charging experience, the NEC 80% rule reduces infrastructure maintenance costs and extends the infrastructure’s lifespan.
• Future-Proof: The rule is future-proof and can be implemented in the existing EV charging infrastructure to ensure faster charging for electric cars.

Key Takeaways

As we can see, the NEC 80% rule is an effective solution for smart charging infrastructure designed to improve the charging process for electric vehicles. By limiting the power intake to 80% of the battery’s capacity, the rule promotes safe, efficient and speedy charging without risking battery damage. Moreover, it extends the life of the battery while reducing infrastructure maintenance costs, making it a compelling solution for EV charging infrastructure. The implementation of the NEC 80% rule in different countries would promote standardization for EV charging, which in turn would boost the EV industry. It's a win-win situation for all parties involved, from EV manufacturers and EV owners to charging infrastructure providers.

Are there any other suggestions on how to simplify the charging process for electric cars? Share your thoughts with us in the comments below!

Maximizing Efficiency and Avoiding Confusion: A Beginner Guide to Electric Car Charging

Electric cars have come a long way in the past decade and are becoming more popular on roads worldwide. If you're new to electric cars, then you're likely to have a lot of questions about charging and how it works. Don't worry, though, because this beginner guide will help you to maximize efficiency and avoid confusion when it comes to electric car charging.

What is Electric Car Charging?

Electric car charging can be defined as the process of replenishing your electric car's battery with electrical energy from an external source. Typically, this will involve connecting an electric car to a charging station via a cable to charge the battery.

Types of Electric Car Charging

There are different types of electric car charging levels, and it's essential to know the differences between them to choose the right charging option for your needs. Below are the types of electric car charging:

• Level 1 charging: Level 1 charging uses a standard 120-volt electrical outlet and provides up to three miles of range per hour. It is best suited for emergencies since it takes a long time to charge the battery fully.
• Level 2 charging: With a level 2 charging station that uses a 240-volt supply, you can expect to get up to 25 miles of range per hour of charging, making it ideal for most electric car users.
• DC fast charging: DC fast charging provides up to 80% battery charge in just half an hour and is best suited for traveling long distances—perfect for those on road trips.

How to Charge Your Electric Car

You have several options to charge your electric car, depending on your lifestyle, location, and budget. Below are ways you can charge your electric car:

• Public Charging Stations: Public charging stations are located in public areas, such as shopping malls, restaurants, and parking lots. You need to download the necessary charging apps to access most of the public charging stations and pay the required fees to use the charger. It is best for quick top-ups and emergency charging.
• Home Charging: You can install a level 2 charging station in your garage or driveway to charge your car overnight. This ensures that you always have a full battery every morning and is the most convenient option for most electric car owners.
• Work Charging: If your workplace has charging facilities, you can charge your electric car during working hours.

Key Takeaways

In conclusion, driving an electric car is becoming increasingly popular due to its cost-effectiveness and environmental friendliness. Maximizing efficiency and avoiding confusion when it comes to charging your electric car should be a top priority for all electric car owners. Here are some key takeaways:

• Understanding the different types of electric car charging can help you choose the right charging option for you.
• Level 2 charging is the most popular option and provides up to 25 miles of range per hour of charging.
• DC fast charging provides up to 80% battery charge in just half an hour, making it perfect for long-distance travel.
• Home charging is the most convenient option as you can charge your car overnight.
• Take advantage of work charging facilities if available.

Industry Statistics

• The global electric car market reached 2.1 million units in 2019, with the market predicted to increase to 145 million by 2030. -Statista
• Electric vehicles' sales increased by 81% year-on-year to 137,950 in the first quarter of 2021. -Inside EVs
• The US has over 100,000 charging stations, with California having the most charging stations (35,702) -AFDC
• In 2020, the global electric car battery market was valued at approximately USD 28.6 billion. -Zion Market Research

With this beginner guide, you should have a better understanding of how to efficiently and effectively charge your electric car battery, which is essential for any electric car owner. Whether you're traveling short or long distances, you can always keep your electric car charged and enjoy the benefits of eco-friendly driving.

Eliminating the Confusion of Electric Car Charging with the NEC 80% Rule A Step-by-Step Guide

Electric cars have been dominating the automotive industry for several years, thanks to their eco-friendliness, low maintenance, and long-term cost-saving advantages. Although driving an electric car is convenient, charging it might be a little confusing, especially if you're not familiar with the National Electrical Code (NEC) 80% rule.

The NEC 80% rule is a safety standard that prevents overloading an electrical circuit. It states that you should never rely on more than 80% of the circuit's ampere capacity to avoid overheating and potential hazards. In other words, if your electrical circuit has a maximum capacity of 20 amps, you should only use 16 amps to charge your electric car.

Why do you need to follow the NEC 80% rule?

Following the NEC 80% rule is crucial for your safety and your electric car's longevity. Overloading your circuit can cause wires to overheat, leading to electrical fires and damaging your electric car's batteries. Furthermore, overusing your circuit may require you to replace your circuit's breaker or the entire panel, which can be expensive.

Step-by-Step Guide to eliminate the confusion of electric car charging

• Step 1: Know your electric car's charger specifications

  Identify your electric car's charger specifications, including the voltage and amperage requirements that it needs to charge adequately. Most electric cars have volts ranging from 240V to 480V, while amperage ranges from 24A to 80A. Knowing this information will help you choose the right charger for your car and determine the optimal location.

• Step 2: Check your home or office's electrical circuit capacity

  The next step is to ensure that your home or office's electrical circuit can handle the charging requirements of your electric car. Check your circuit's amperage capacity and plan to use only up to 80% of its capacity to charge your car. For instance, if your circuit's capacity is 30A, set your car's charger to use only 24A to comply with the NEC 80% rule.

• Step 3: Choose the right charger for your electric car and charging location

  Based on your car's voltage and amperage requirements and your location's electrical capacity, select the appropriate charger that can accommodate these needs. Depending on your budget and charging needs, you can choose between level 1 or level 2 chargers. Level 1 chargers use a standard 120V outlet and offer slow charging, while level 2 chargers require a 240V outlet and charge faster.

• Step 4: Install your electric car charger and follow the NEC 80% rule

  Once you've chosen the right charger and location, it's time to install it correctly, following the manufacturer's instructions. Ensure that you comply with the NEC 80% rule by setting the charger's amperage to 80% of your circuit's capacity.

Key takeaways

• Following the NEC 80% rule is crucial for your safety and your electric car's longevity.
• Identify your electric car's charger specifications and your electrical circuit's amperage capacity to determine the optimal charging location.
• Choose the right charger for your electric car and charging location based on your car's voltage and amperage requirements and your circuits' capacity.
• Install your electric car charger correctly, following the manufacturer's instructions and comply with the NEC 80% rule to avoid hazards and costly damages.

In conclusion, charging your electric car might seem intimidating at first, but following the NEC 80% rule and this step-by-step guide will eliminate any confusion and provide you with safe, efficient, and cost-effective charging solutions. Remember to always prioritize safety and seek professional help if you're unsure about your electric car's charging requirements.

Breaking Down the Barriers: How Smart Charging Technology is Revolutionizing the Electric Car Industry

Welcome to the future, where electric cars are the norm and combustion engines are a thing of the past. However, there are still some barriers that need to be broken down before electric cars can become the go-to choice for the masses. One of those barriers is range anxiety and charging times. This is where smart charging technology comes in to save the day.

The Problem with Traditional Charging

Traditional electric car chargers take a relatively long time to fully charge a car’s battery. It can take anywhere from 30 minutes to several hours, depending on the charging station and the car’s battery capacity. This poses a problem for the daily commuter who needs to quickly charge their car during their lunch break or on their way home.

Besides long charging times, traditional chargers also run the risk of damaging the car’s battery if left plugged in for too long. This can result in permanently reducing the battery life and range of the vehicle, leading to additional repair and replacement costs for the owner.

The Advantages of Smart Charging Technology

Enter smart charging technology, which uses advanced algorithms and machine learning to optimize charging times and prevent battery damage.

• Smart charging technology uses real-time data and predictive analytics to determine the best time and charging rate for the car’s battery, based on the driver’s schedule and energy rates.
• Drivers can also track and manage their charging sessions through an app, providing them with real-time updates on their battery’s status and charging progress.
• Smart charging technology can also prioritize and manage multiple electric vehicles charging at the same station, preventing grid overload and energy waste.

The Future of Electric Car Charging

As the demand for electric cars continues to rise, the need for more efficient and accessible charging infrastructure becomes increasingly important. Smart charging technology is the key to breaking down the remaining barriers of electric car adoption and making it a viable option for everyone. Here are some key takeaways about the future of electric car charging:

• Smart charging technology will improve the accessibility and efficiency of electric car charging, making it a more viable choice for daily commuters and long-distance travelers.
• Smart charging technology can help reduce the cost of EV ownership and maintenance by optimizing energy usage and prolonging battery life.
• The development and implementation of a standardized smart charging system will create a more seamless, interconnected charging network of electric cars and stations, reducing range anxiety and increasing overall electric car adoption.

According to a study by the International Energy Agency, there will be over 140 million electric cars on the road by 2030. With the help of smart charging technology, we will be able to overcome the remaining barriers and shift the global transportation industry towards a more sustainable and greener future.

Electric Cars and the NEC 80% Rule: What You Need to Know to Charge with Confidence

Attention all electric car drivers! If you’re not familiar with the National Electrical Code (NEC) 80% rule, you could be in for a shock. Literally. The NEC sets regulations for the installation of electric vehicle (EV) charging stations to ensure public safety. But with EV ownership on the rise, it’s more important than ever to understand how these regulations affect your charging habits. Keep reading to learn everything you need to know about the NEC 80% rule and how it impacts electric vehicle charging.

Key Takeaways

• NEC 80% rule is a safety regulation to prevent overloading of electrical circuits.
• Charging your electric car to 100% may cause issues with your home electrical system.
• EVSEs have safety features to prevent overloading.
• Installation of EVSEs should be done by a licensed electrician.

What is the NEC 80% rule?

The NEC 80% rule states that electrical circuits should not be loaded to more than 80% of their maximum capacity. This means that if you have a 20-amp circuit, you should only use up to 16 amps to avoid overloading the circuit. Overloading a circuit can cause damage to your electrical system, starting with tripped breakers and leading to damage to the wiring or even fire.

When it comes to electric vehicle charging, this means that you should never charge your car to 100% because doing so will exceed the 80% limit. For example, if you have a 30-amp circuit, charging your car to 100% at 32 amps would overload the circuit.

How to Calculate Your Maximum Charging Capacity

To make sure that you don’t exceed the 80% limit and avoid overloading the electrical system, you should calculate your maximum charging capacity before installing an EV charging station. To do this, follow these steps:

1. Find out the amperage of your home’s electrical panel.
2. Determine the amperage rating of the circuit breaker that corresponds to where you want to install the EV charging station.
3. Multiply the circuit breaker rating by 80% (or 0.8) to find the maximum charging capacity of your EV charging station.

For example, if your home’s electrical panel has a 100-amp rating, and the circuit breaker for where you want to install the EV charging station is rated at 40 amps, your maximum charging capacity would be 32 amps (40 amps x 0.8).

Why is Compliance with the NEC 80% Rule Important?

Compliance with the NEC 80% rule is vital to keep your home and electric vehicle safe. Overloading a circuit can cause electrical problems and fire hazards. Electric vehicles inherently require a lot of power to charge, so following proper guidelines ensures that your charging habits are safe and efficient. Not only that, but compliance with the NEC 80% rule is required when installing an EV charging station by licensed electricians.

Electric vehicle supply equipment (EVSEs) contain specific safety mechanisms to prevent overloading. For example, most newer EVSEs have software that determines the maximum amount of current a specific circuit can handle and adjusts charging rates to stay under that limit.

Do I Need a Building Permit to Install an EVSE?

Yes. According to the NEC, the installation of EVSEs requires a building permit. The local building department will then verify that the installation complies with the NEC, building codes, and all other relevant regulations to ensure public safety.

The Bottom Line

Don’t be caught off guard when it comes to the NEC 80% rule and electric vehicle charging. Following the NEC 80% rule ensures that your electric vehicle is charged safely and doesn't cause problems with your electrical circuits at home. Always remember to calculate the maximum charging capacity of your EV charging station before installation, and have a licensed electrician install your charging system. Compliance with the NEC 80% rule is required by contractors installing EVSEs, and getting a building permit ensures proper compliance and proof of quality installation.