RV Daily Tips Newsletter Issue 881

RV Daily Tips Newsletter Issue 881

Issue 881 • April 11, 2018
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RVing Tip of the Day

Will your RV protect you from a lightning strike?
 
By Mike Sokol
Since we’ll soon be in lightning season, it’s time to prepare for storm safety. Here’s a typical question about RVs and lightning I receive every year.

“I know an automobile or truck is a safe place to be during a thunderstorm with lightning because you are basically in a metal box. How about our fiberglass RVs? Are we protected in any way from lightning or should we head for our vehicle?” —Walt L. (Boulder, CO)

Ah, yes. The “Why don’t you get electrocuted when lightning hits your car?” question. As many of you may already know, you are safe from lightning when inside a car with a metal roof, but soft-top convertibles are certainly NOT safe in a lightning storm. That’s because as Walt hinted, in a car, you are essentially inside a big metal box, and this box forms something called a Faraday Cage. This cool gadget was invented by Michael Faraday back in 1836, when he coated the inside walls of a room with metal foil and discovered that voltages would flow around the outside of the room but never reach inside of it. See this website for more technical stuff about Faraday Cages.

It also hints that the rubber tires on a vehicle do nothing to insulate you from a lightning strike. If the lightning has already traveled thousands of feet from the cloud towards the earth, another 6 inches of tire insulation won’t slow it down a bit. It’s the metal surrounding you that forms a magnetic field that helps bend the electricity around the exterior of the box. And even though you have windows in a car, there’s typically enough metal in the windshield and door columns to make a nice low-impedance electrical path around you. However, don’t stick your hand out the window in an electrical storm as you could be killed that way.

So let’s think about a typical RV. An all-metal shell like an Airstream is probably as safe as you can get in a lightning storm since they’re shaped like a big aluminum Twinkie, and that same airplane shape allows airliners to be hit by lightning without any interior damage. I’ve actually been on a flight that was hit by lightning, and even though everything lit up very bright, the pilot said it was no big deal and indeed everything was fine. And an aluminum skin toy-hauler or race-car trailer would be just as safe in a lightning storm.

However, fiberglass-skin RVs are a different story altogether. If they’re manufactured with a welded aluminum cage using fiberglass insulated panels, I’m pretty sure the Faraday Cage effect would still work. But if your RV is fiberglass over stick (wood) construction, then I would say you’re not safe in a lightning storm, and you would want to wait it out in the tow vehicle.

Pop-up campers with tent fabric offer zero Faraday Cage protection, so I would never spend time inside one during a bad lightning storm. Plus, if they’re parked under a tree there’s always the possibility of a big limb falling on your head with dire consequences. So pick your campsite carefully to avoid overhanging branches.

In any case, you’ll want to disconnect your RV shore power plug from the campsite pedestal during a big storm, since a lightning ground strike on the other end of the campground could easily get directed into the underground wiring feeding all the campsites, and you could have a several-thousand-volt spike (surge) come in through your electrical panel and burn out everything inside your RV. But your onboard generator should be safe to run since it’s also inside of your Faraday Cage. However, hooking your shore power plug into a portable generator sitting outside on the ground would be a very bad idea in a lightning storm.

I’ve also heard some people recommend lifting the leveling jacks or putting them on insulated platforms for lightning protection, but I’m pretty sure that would have little or no effect on any lightning ground surface charges getting into your RV. If you have a metal-caged RV with either aluminum or fiberglass skin, I would say to leave the jacks down, disconnect your shore power from the campsite pedestal, and turn on your battery-powered fan and interior lights for a little ventilation and illumination. Then break out the deck of cards and whatever social fluids you like and wait for everything to blow over. If your RV has a wood frame and fiberglass skin or is a tent fabric popup, I would head to the campground rec center or your car and enjoy the show while the lightning zips around you. And take your digital camera to try for some time-exposure pictures of lightning strikes. I love watching lightning storms … but only from the inside of a protected place.

 


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Then you need Americas Mailbox! You’ll enjoy great tax advantages with your South Dakota “residency,” like no state income tax and low insurance rates (second lowest in the USA says the Insurance Information Institute). Many plans are available. Click the video where RV Travel editor Chuck Woodbury talks with Americas Mailbox owner Don Humes. Or click here to learn more or enroll.


QUICK TIPS

Prevent containers from moving around in the fridge
If you find items in your refrigerator “meander” around while traveling, put empty pots or dishes inside to take up the open space and prevent sliding.

Set your meter before measuring voltage
With electricity expert, Mike Sokol
Don’t put your meter test leads in a live circuit and THEN spin the dial to find the correct setting. Doing so will likely cycle through the amperage or resistance settings, which will burn out your meter or pop its internal fuse. Instead, determine what you’ll be measuring first, select the appropriate setting on the meter, and only THEN put your meter leads in the circuit. And make sure you set the meter for AC when testing AC voltage, and DC when testing DC voltage. The wrong settings can either give you a very incorrect reading, or measure zero when there is in fact voltage in a circuit. So, learn how to use your meter BEFORE you need to use it. Try it on a 9-volt battery first, then work your way up to a 120-volt home outlet.

Removing RV window screens
Can’t figure out how to remove RV window screens for cleaning? Most simply need to be lifted up about a 1/2 inch at the bottom to compress spring-loaded gizmos at the top.

HOT TOPIC AT RV TRAVEL.COM
Will RVing be as popular in 20 years as it is today?


WEBSITES OF THE DAY 

Camping Road Trip
This site has everything from campground locators, to outdoor adventure guides, to skills needed for outdoor living. In other words, keep this page bookmarked – it’s a good one. 

The Fit RV
It’s easy to just plop down on our comfy RV couches and stay there awhile. The Fit RV helps you stay fit while out on the road. Fitness tips, healthy recipes, and workouts are what you’ll find here. Now get movin’! 

RV Pinterest 
Ever searched “RV” on Pinterest? If you haven’t, we’re sorry you’re never going to get anything done ever again. Gooooodbye free time! 

Check out the long list of
great RVing-related websites from RVtravel.com
.


The best book on RV electricity, hands down!
RV Travel contributor Mike Sokol is America’s leading expert on RV electricity. Mike has taken his 40+ years of experience to write this book about RV electricity that nearly anyone can understand. Covers the basics of Voltage, Amperage, Wattage and Grounding, with additional chapters on RV Hot-Skin testing, GFCI operation, portable generator hookups and troubleshooting RV electrical systems. This should be essential reading for all RVers. Learn more or order.


VIDEO OF THE DAY

Be careful around these poisonous plants found in some campgrounds
RVtravel.com editor Chuck Woodbury warns you about a poisonous plant found in the American West, including some campgrounds in dry climates or deserts. The plants can be deadly under certain circumstances.

CLICK THE VIDEO TO SEE THE TIP.
See all of our videos on our YouTube Channel.

The definitive guide to road kill!
Are you among the millions of people whose only opportunity to observe wildlife comes after it has been run over and pressed into a patty on the highway, then desiccated by the elements until even flies don’t recognize it? This is the field guide for you! FLATTENED FAUNA fills an important gap in our natural history knowledge and fosters a heightened respect for the ecology of the paved environment. Learn more or order.


MORE QUICK TIPS

Keep bottles neatly in place in the cupboard
“To keep bottles in their place, cut a 2- to 3-inch-thick piece of dense Styrofoam to fit the cupboard, trace the shape of the bottles you want to store in the cupboard on the styro, cut out and put styro in the cupboard and put bottles in their proper hole. I mark each hole so I will always know what goes where.” Thanks to Mary and Danny R. for this great tip!
 
A trick for working with trailer equalizer bars
When installing trailer equalizer bars, hitch the trailer to the ball then crank up the tongue jack an inch or two to raise the tow vehicle. Now hook up the equalizer bars. When disconnecting, leave the trailer hitched and crank the tongue jack to lift the tow vehicle a bit. Now disconnect the equalizer bars. Lift the weight off the tow ball, unlock the coupler and disconnect.
 
Do you have a tip? Send it to diane (at) rvtravel.com .

New & interesting finds at Amazon.com
See what really cool stuff Amazon is featuring today. It’s a whole lot of fun just browsing through all these great items. The selection changes every day, so check back often. You never know what you will find, which is part of the fun of visiting here. Check it out

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RV Daily Tips Staff
Editor and Publisher: Chuck Woodbury. Managing editor: Diane McGovern. Staff writer: Emily Woodbury. Contributing writers: Russ De Maris, Bob Difley, Gary Bunzer, Roger Marble, Deanna Tolliver, Mike Sokol, J.M. Montigel and Andrew Robinson. Advertising coordinator: Gail Meyring.

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Related

34 thoughts on “RV Daily Tips Newsletter Issue 881

  1. Ron Jewell

    Oleander also produces poisonous smoke when burned.

  2. DAVE TELENKO

    Mike, thats a great article about lightning strikes & the invention of the Faraday cage. I was wondering where the jolt goes, wouldn’t it have to be grounded to make it effective, I was thinking when I lived back east some of the farm buildings had lightning arrestors on then & they seemed to be grounded.
    Thanks Dave

    1. Mike Sokol

      Wow, that could be an entire article. Lightning rods and Faraday cages work on two entirely different principles, so it will take several thousand words and half a dozen graphics to explain. I’ll put it in the hopper but it will probably take a while to make it to the top of the pile. So please stand by.

      1. Marmot

        Potential customers of Jayco should know that they are now producing a Jay Feather fiberglass shell trailer with a wooden frame. Previous Jay Feather fiberglass trailers all had aluminum frames. That fiberglass/wood combination will not protect you from lightning.

        1. Mike Sokol

          As you noted there will be zero Faraday cage effect from a fiberglass over wood frame, so you definitely want to get to a safe place if there’s any chance of lightning. It’s still best to get to a large permanent building on the campgrounds, but your car or truck will be the next best thing.

  3. Joan coppage

    Chuck, you didn’t mention that you should keep your dogs away from oleanders.

  4. Phyllis Avella

    We also belong to Passport America. Our social network is RVillage.

  5. Merrily

    I am a lifetime member of GS before dodohead took over! I belong to RVW and Thousand Trails

  6. Leonard Brooker

    passport america

  7. Jon

    Several reciprocal camping clubs: ROD, AOR, ACN, Coast to Coast

  8. Merlin B

    Member of GS and also SMART. Special Military Active Recreational Travelers. Open to all veterans of all services. Check it out at Smartrving.org.

  9. Phil Hodge

    Mike – You suggest that you think an aluminum skinned steel frame would serve as an adequate Faraday Cage. ShowHaulers skin is stuck to the frame with 3M tape, so I don’t think there is continuity between the frame and skin, or between adjacent panels of skin. Therefore, I don’t think the skin will contribute to the Cage effect. Your thoughts? Or ideas of how to build a model and test it??

    1. Mike Sokol

      Phil, that’s a really good question. I’ve mulled this over before, but it’s complicated to answer because of the lack of empirical data from a well designed experiment. And that experiment would probably require actual lightning-bolt voltages from a Tesla coil. But I’ll have to think about this some more since it’s such an interesting topic.

      1. Phil Hodge

        Mike – I’m getting a new ShowHauler later this year, so the question is a little more than academic. I am retired structural engineer and steel fabricator, so I have time and access to a steel shop. Care to work together to conduct some experiments attempting to address those questions? Contact me direct via email. If you don’t get my email even though I fill it in in the form below, leave me another message here.

        1. Mike Sokol

          Phil, you can email me at mike@noshockzone.org. I’m curious about what you have in mind.

  10. Ron

    Concerning your two tips: Containers moving around and Keeping bottles in place.

    We have found that using clear plastic bins in the fridge and overhead cabinets will not only keep everything in place but will also help in organizing. Need something in the fridge, just pull out the bin and there it is….no hunting moving things around, things falling out when you open the door…etc. Same thing goes for the cabinets. We use our little label writer and label each bin what is stored in it. The same principle applies to basement storage. Put all like items in clear plastic bins that you can purchase at Walmart or any other department type store. Maybe I’m a little OCD, but plastic bins really keep everything in place and organized.

  11. Wendell

    Yet again great information on a wide set of pertinent items, and not just for rvers. Infinite? May be so.

  12. George

    Mike, you state: “…you’ll want to disconnect your RV shore “. Is this still necessary when using a surge suppressor? I would expect the surge suppressor to be burned out if it took at lightning jolt (mine has a lifetime warranty) but would it protect the RV? I’m not sure it’s a good idea to be going out of the RV when it’s lightning to pull the plug.

    1. Mike Sokol

      I’ve actually witnessed a basic surge suppressor that sacrificed itself to protect my basement freezer when a lightning strike hit in the field about 100 yards from my house. So I do know they help keep the voltage spikes out of your RV. But if there’s a direct lightning strike on the campground’s electrical system I’m afraid that’s probably above even the most robust surge protector to keep the voltage spike out of your RV. So let’s think about it this way. If you’re already inside of your RV and it’s raining and begins to storm, as long as you have a surge protector in place, don’t go out in the storm to pull the plug. But if you KNOW a big storm is coming from a weather alert, then it’s best to pull the shore power plug. Make sure you disconnect any cable TV connections while you’re at it.

      1. George

        Thanks Mike. I have satellite tv with a portable dish . I didn’t think of disconnecting the coax which I sometimes have 100 feet running over the ground. Good point.

  13. Steve and Linda Brady

    We belong to Monaco America, Georgia Funseekers, Passport America, RVillage, Good Sam, FMCA, and Discovery Group.

  14. George

    Member of Passport America, BCAA, Explorers RV Club, Snowbird Club of Canada

  15. Lee Ensminger

    I checked what was available, and we are also Lifetime Members of Passport America.

  16. Larry Large

    We’re members of Harvest Hosts, RVillage, CC1, Passport America and Explorer. This is in addition to GS, FMCA and the Fleetwood owners group that I checked of above.

  17. Tommy Molnar

    I broke out laughing at Mike’s new term “social fluids”. Of course, we will now HAVE to use that term all the time.

    1. Mike Sokol

      Thanks…
      Anything I can do to get the party started.

    2. Mike Sokol

      And does that mean you’ll provide the “social fluids” if I show up at your campsite for a visit?

  18. Robert Pulliam

    If campgrounds in the West intentionally use oleander to separate campsites it would seem to be in violation of the law if a child or anyone else was poisoned by touching the leaves. Since it has a beautiful flower that would be all the more temptation for a small child to touch it. Very irresponsible campground owners.

    1. robert maher

      there isn’t any thing on the plant that will hurt you you have to ingest it to get sick. other wise how can anyone prune them. I have had them here in my yard for 30 years andn ever had a problem even my chickens don’t eat them. even the state uses them on the freeway. enjoy them and not to worry.

      1. Rory

        They also grow in the south, as a kid my friends and I played hide and go seek actually hiding in one of the many Oleander bushes growing in our yards. I had no idea they were poisonous. Glad we didn’t eat anything. Good idea to keep pets away from them, and keep in mind that they are poisonous.

  19. Gary Glenn

    Chuck, your survey today is going to be misleading. We are members of CCI, Good Sam, Passport America, and RVillage . I believe many others are going to tell you the same thing. Have an Awesome day. By the way great article on lightening today

  20. Bob Godfrey

    FMCA, Good Sam & Passport America.

  21. Judy Glazier [Whinot]

    The question would only allow me to enter one. I’m a member of GS, Escapees, Passport America, and Loners on Wheels.

  22. Raymond Nuzzolo

    I’m also a member of Coast to Coast and Passport America

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