(Click here to read the complete disclaimer)
Dangerous electrical problems are way too common!
Believe it or not, the photo at the top of the page was our actual "power pole" when camping near West Yellowstone. It is certainly the most questionable power source we've ever run into at a campground. We have, however, found better-looking power poles that had worse problems.There are three main electrical problems to be aware of when camping. All of which can be dangerous:
- Bad wiring of the power pole at the campsite
- Power surges that occur during a nearby lightning strike
- Improper electrical voltage
Bad wiring at the campsiteWe're all in a hurry to get things set up when we pull into a new spot while camping. While it's tempting to just plug in your RV, you can easily destroy electrical components if the power source has problems. With a 30 amp circuit (what's common with most small travel trailers), the main problems that can exist with the wiring are:
- No power
- Improper or missing ground connection
- There is an open neutral line
- The polarity is reversed
(In addition to these potential electrical problems, the 50 amp circuits used with larger trailers and RVs have two electrical sources. They are called legs and are why the connectors have an extra prong. These 50 amp circuits may also have a problem with no voltage on one of these legs.)
This is the most common electrical problem you will experience at many campgrounds. If these items sound too technical, know that they are all dangerous electrical problems. Any of these issues can cause damage to your small trailer's electrical system or the electronic devices you may have plugged in. Some of the problems could present a shock hazard; something you certainly want to avoid. You should always test the power to find out if you have a problem before you connect your trailer's electrical plug.
Power Surges from nearby lightning strikes
The next one of the dangerous electrical problems you will run into when camping is a power surge. We spent over 30 years living in the Orlando area. Central Florida is the lightning capital of the world. We certainly understand the danger of lightning and how it creates problems.
Two things that come along with lightning are power failures and surges. A surge is when the power voltage spikes, or in other words goes much higher than it should. It happens frequently when there are lightning strikes in the area but can happen from other things too as described next.
A bad power surge from a nearby lightning strike can cause enough electricity to damage your trailer. It can destroy electrical circuits, your power converter, and other electronic components. Any electronic devices you have plugged in when a bad surge occurs can also be damaged. While it's rare, an electronic device taking a hit could also cause a fire. A bad power surge is the most damaging electrical problem you are likely to experience while camping.
PLEASE NOTE: Nothing will protect you from a direct lightning hit
Improper Electrical Voltage
Sometimes you'll find that the electrical voltage is too high or too low. We've stayed at places where it would fluctuate. It would be fine most of the time, but would randomly become too high or too low. While this may not be as extreme as a power surge caused by lightning, it can also damage your trailer's electronic components.
The problem is generally caused by an inadequate electrical system. Often you will notice the problem if large equipment located nearby starts up or stops. You may have experienced a smaller version of this in your home if you've ever noticed the lights dim when your A/C kicks in. While this is a concern, it generally causes the least damage (if any) and by itself doesn't normally present a significant danger.
A good surge suppressor is the best way to protect your small travel trailer from lightning strikes nearby
A basic, portable in-line surge suppressor will help prevent electrical damage to RVs and Trailers
A high-end, portable in-line surge suppressor, often referred to as an EMS
This is the device we have now. After our original surge suppressor took a hit, I decided to spend the extra money and upgrade to one of these. Like the basic unit, it addresses items #1 and #2 above, but also helps with item #3. If the campsite voltage drops below or exceeds a certain level, it turns the power off. It will turn it back on once the voltage returns to an acceptable level.
A few other nice features it has are:
- There is a delay when it is first connected to the power (or when you turn on the breaker). During that time it runs diagnostics. This is a great feature should the power go out for any amount of time while your trailer is connected with the Air Conditioner running. The delay will help prevent damage to the A/C compressor if the power just hiccups and is out for a few seconds.
- Instead of simple indicator lights like the basic unit above, this device has a digital display that provides more information and the status.
We've had this one for a few years now and I do like the additional features. But if we were just getting started again, I'd still feel good about buying the basic one above to save some money.
OPTION 3 (TECHNICALLY THE BEST...but with a few disadvantages)
- A permanently installed EMS
PLEASE NOTE: I try to write about our own personal experiences. In this case, I've never actually owned one of these. The following information is what I have learned by reading and talking with other campers.
This is the upper-end solution, and typically what's pre-installed in many large RVs. It has all the protection of the "Better" device above, plus usually a few other bells and whistles. However, it also has some disadvantages.
- Price - These are more expensive than the portable in-line devices
- Additional Cost - They must be installed by a professional
- Replacement Cost - Should the unit take a hit and need to be replaced, you will likely face the same high costs again
- Loss of Power - If the unit fails for any reason, you will have no power in your trailer until you get it repaired or replaced
For us and our budget, it doesn't provide enough additional benefit to justify the additional cost.
How to use a portable in-line surge suppressor with your small travel trailer
Using a device like the ones we've had is simple. Here's the best procedure to get things connected:
- Make sure the correct breaker in the power pole is turned off.
- Connect the surge suppressor to the power pole connector.
- Turn on the breaker.
- Check the indicator lights or display on the surge suppressor to make sure there are no problems with the campsite wiring. If you are using a device like our current one (BETTER above), wait for the delay and allow the diagnostics to be completed.
- If a problem is indicated, stop and go tell them at the campground office. They will usually either send someone out to deal with the problem or move you to another site.
- If there are no problems, turn the breaker back off.
- Connect the power cord from your travel trailer to the surge compressor.
- Turn the breaker back on.
When you are packing up to go, simply turn off the breaker first, then disconnect everything and put it away.
Please don't take a chance with this
Protecting yourself against dangerous electrical problems when camping should be a top priority. Don't put off spending the money now and end up regretting it later. Be sure to send me a note if you have any questions.
P.S. If you are on a very tight budget, check out my other article: Low-Cost Way to Test for Campground Wiring Problems. It describes a very low-cost device that you can use to at least test for the most common electrical problem at campgrounds.
Denny JohnsonAfter having spent most of our adult life in Orlando, my wife Fay and I moved to Knoxville, TN in 2020. We are loving the change of seasons and being near the mountains. Plus, this part of the country is loaded with great places to camp.
We camped years ago with a pop-up camper, but got serious about it when we purchased our Casita in 2014. There was a lot to learn as we started traveling with it, and a lot of conflicting opinions on line. That's when I decided that creating a website would be a good retirement project. I started tinyTowable.com to share things we've learned along the way that have worked well for us in hopes that the information would be of help to others.