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As RV electrical systems become more advanced, owners are discovering new ways to power their rigs while traveling. With features like Ford Pro Power Onboard, onboard generators, inverters, and lithium battery systems, it is natural to ask whether you can charge your RV while driving.
In this episode of Todd’s Two Minute Tech Tip Tuesday, Todd revisits a question that generated a lot of discussion after a previous video. Many viewers shared that they successfully use their Ford truck’s onboard inverter to send 120 volt power to their RV while towing. Todd agrees that it can be done, but he encourages RV owners to think beyond what is possible and consider what is actually the safest approach. His message comes down to one important idea.
There is a difference between what is possible and what is prudent.
The Question
The original question centers around using a Ford truck equipped with an onboard inverter system to provide 120 volt power to a travel trailer while driving down the road.
Several viewers commented that they already use this setup to charge their batteries and power their RV while traveling. Todd acknowledges these experiences and understands why the idea is appealing. Having access to 120 volt power while towing can help keep batteries charged and electrical systems operating during long trips.
However, the discussion does not stop there.
Looking Beyond Convenience
Todd explains that his concern is not whether the system works. Instead, he focuses on the safety considerations that come with running a 120 volt extension cord between the truck and the trailer while traveling.
Every truck and trailer combination already includes safety systems designed for towing. The trailer has a breakaway switch, and the seven pin electrical connector is designed to disconnect if the trailer separates from the tow vehicle.
The question Todd raises is whether a standard 120 volt connection offers the same level of protection.
The power cord uses exposed male prongs, and unlike the trailer wiring connector, it is not specifically designed as a breakaway connection. That difference becomes an important part of evaluating the overall safety of the system.
What Do Ford and DOT Say?
Todd explains that he researched both Department of Transportation guidance and Ford’s recommendations.
According to Todd, the Department of Transportation indicates that any setup should meet safe standards. He also notes that Ford advises owners not to use the system while traveling unless approved equipment is used. His research led him to references for UL approved equipment, but he continues asking an important question.
Is there a solution that provides both a secure locking connection and a true breakaway design for a 120 volt power cord?
That uncertainty is why Todd remains cautious when discussing this type of installation.
A Responsibility to Recommend Safe Practices
As an instructor at NRVTA and someone who teaches RV solar and inverter systems, Todd explains that recommending equipment carries responsibility.
He points out that RV owners may choose to build their own systems and make their own decisions. However, professional installers have an added responsibility to consider liability if they recommend or install a system that later contributes to an incident.
That is why Todd chooses to approach the topic carefully.
Rather than simply asking whether something works, he asks whether it represents the safest recommendation for the average RV owner.
When It Makes Sense
Todd makes an important distinction.
Using the truck’s onboard inverter while the truck is parked presents a completely different situation.
When parked, the onboard inverter can provide 120 volt power to the RV, helping run appliances while simultaneously charging the batteries. In that situation, Todd explains that the setup works well.
His concern applies specifically to using the system while the truck and trailer are traveling down the road.
The Difference Between Possible and Prudent
Technology continues to create exciting opportunities for RV owners. Every year brings new equipment, larger battery banks, more powerful inverters, and additional ways to improve the camping experience.
At the same time, every new idea should be evaluated through the lens of safety.
Todd’s closing message summarizes the entire discussion.
Just because something can be done does not automatically mean it should become the standard recommendation.
Understanding the risks, evaluating the equipment, and considering how a system behaves in real world situations are all part of making informed decisions.
At NRVTA, students learn how to evaluate RV systems using practical troubleshooting methods and sound electrical principles. Whether your goal is maintaining your own RV or becoming an RV Service Technician, learning to think critically about both performance and safety helps build the confidence needed to make better decisions on the road.
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