Do RVers Really Need A Power Management System?

I see that question all the time on Facebook and most of the Blogs that I read.  For the simple, easy, straightforward answer, YES you do.  There are so many factors involved here that I can not possibly cover them all in a single post but, I would like to cover the basics so that you can better understand why you need a Power Management system of some kind.





1. You need to know what the AC (Shore Power) voltage is inside your rig.  This is the power that indirectly powers lights, water heater, microwave, furnace, charger for the 12-volt battery system, etc.  If the voltage gets below 102 volts and should stay there for a few minutes it would be possible to sustain approximately $1200 of damage or more.

So what do you need?  You will need an AC Line Voltage Monitor.  The unit shown below is plugged into an AC wall outlet that you can see and will monitor what the line voltage is.  If it should go below 105 volts you need to unplug your rig from the outside power pedestal until the voltage goes back to normal.

AC Line Voltage Monitor

So how do you know when the outside power pedestal is back to normal.  You plug the Voltage Monitor into the 125 volts two pin socket in the power pedestal and see what the monitor reads.  It should read 110 volts or higher up to 125 volts.  The same caution goes for overvoltage.  You should unplug the rig from the power pedestal if your Voltage Monitor begins to read over 122 Volts.  Plug the Voltage Monitor into the power pedestal and watch for the voltage to drop to below 122 Volts.
Could this monitoring of the voltage be done for less money?  Yes, by using a cheap Digital Volt Meter  pictured below;

 Digital Volt Meter  

Harbor Freight often offers a cheap digital voltmeter for free, with coupon.  Watch their ads and take advantage of the offer.  You could plug the test leads that come with the meter into the meter and then the other ends of the test leads into the slots on the AC wall socket. (Caution do not leave unattended) Or you could make up a cord from a 6-foot extension cord and the test leads that come with the meter.  See below for an example.

AC Cord With Test Meter Leads

2. Next is  The Polarity Tester.  This is used to be sure that the Neutral wire of the power line is not reversed with the positive lead of the power line.  If that were to happen you could have what is called a hot-skin condition.  Meaning that if you had an aluminum skinned rig you could receive quite a shock from your rig.

 The Polarity Tester

The Polarity Tester can also tell you if the Earth Ground (the bare copper wire) is hooked up properly.  
The Earth Ground is a separate conductor which may seem to be doing nothing but, is, in fact, a protective wire. It is there, ready to take the current away to earth ground, from the body or frame of the electrical device it is connected to, makes contact with any "hot" wire. [the 120 volts mains power is carried in two current carrying conductors called "hot" and "neutral".] 
So, IF one of the "hot" conductors should contact the metal frame of the rig, or housing of an appliance, perhaps because the appliance got damaged by being dropped from a table, or similar accident,  the third wire which is the earth ground wire, which runs directly from the housing to the grounding [or earth ground bus] in the fuse or breaker panel, will in effect cause a short circuit which should blow the fuse or trip the breaker. 
This third wire also guarantees a current path back to the electrical panel where the fuse or circuit breaker protecting that circuit is located, in the event that the hot wire should come in contact with the rig's frame, but the neutral conductor should happen to have been cut or damage and become disconnected, or open. 
The idea is to guarantee that if a part of the rig, device or appliance should become "hot," which could be fatal to anyone who then came into contact with it. That the earth ground would trip/open the circuit protection device [fuse or breaker], and turn off the flow of AC current. 

To help further in checking for unwanted or wanted electricity a good investment is the, Voltage Sensor which is shown below;

 Voltage Sensor

With this probe, you do not need to touch the power line to tell if there is voltage present.  You can use this probe to find power lines behind the wall or under the floor of the Rig as well as the towing vehicle.

3.  Often times you want to know or need to know how much power something uses, especially if you keep popping a breaker or the power pedestal. The solution is Kill-A-Watt .  The unit shown below can be used to show how much power an appliance, tool or piece of electronics is using.

 Kill-A-Watt

4. Next, let's look at surge protectors for the various pieces of equipment in your Rig.  Surge Protectors protect only what is plugged into them and only for over-voltage surges.  Surge Protectors do not protect for under voltage or high voltages.  Shown below is a pair of good simple surge protectors;

Surge Protectors

There are Appliance Surge Protectors made just for appliances like microwave and coffee makers

 Appliance Surge Protectors

AC refrigerators, freezers. 

Refrigerator/Freezer Surge Protector

These special surge protectors offer extra features like audible alarms, flashing lights, displays, etc and are to be used with just the items listed on the packaging for the one you would buy.

5.  Next is a group of power management items that will protect your entire Rig not just one item or several items in it. First is the Portable Power Management System This type of system looks at High and Low voltage protection, a time delay for air conditioning compressor startup, 3-mode surge protection, reverse polarity protection, open neutral protection, open ground protection, AC frequency protection accidental 220 Volt protection. Includes an Integrated information panel, previous error code display is weather resistant and has a built-in locking bracket so it can be chained to the power pedestal at the campground to prevent theft.  The only thing this unit cannot do is flush the black water tank.  The miracle unit we are talking about is shown below.

30 Amp RV Surge Protector

These portable units come in two sizes the one above 30 amp and the one shown below 50 amp.

50 Amp RV Surge Protector

Let's say you were involved in a lightning-caused power surge at a campground.  It is estimated you would suffer approximately $3000 to $5000 worth of damage to the electrical system of your Rig along with the things plugged into it.  The features of the 50 amp unit are the same as the 30 amp unit.
Ah, but there is more!  What happens if you do not want something portable but something more permanent in the Rig? Then you have the permanently installed units which are called Fixed Power Management Systems  These units are not really a DIY type of item but, they can be installed by the DIYer if care is taken during the installation.  The 30 amp model is shown below;

 30 Amp Fixed Power Management Systems

There is also a 50 amp version of the same unit as above and can be found here;  50 Amp Fixed Power Management Systems .  The features of both units are the same and are,  high and low voltage protection, time delay for air conditioning compressor start-up, 3 mode surge protection, surge trip indicator, reverse polarity protection, open neutral protection, open ground protection, AC frequency protection. Accidental 220V protection, with remote information display panel, and unit bypass switch.  Unfortunately, this unit also does not dump the black tank.

I hope that you now have come to the conclusion that some type of power management is needed to protect your Rig, its contents and YOU!









Until Next Time

And finally, please remember that this blog is an Amazon affiliate. When you order something through any of the Amazon links, it doesn’t add anything to your cost, but I do earn a small commission on everything you buy. Just click on an Amazon link, then shop as usual.

RV Dog Bones And Adapters

Many times as you travel around the country you will find that you are in need of some sort of thingy that changes what you have into something you need.  This happens most often on the electrical side of your Rig.  If you have a 50 amp rig you may find that the campground you have only has 30 amp plug-ins.  Or you may want to plug in your power pedestal power analyzer into the 30 amp or 50 amp plug-in to be sure that it is safe you plug into your rig.







Let's see what these things look like and what they are used for.  First the RV Dog Bone.
The typical RV Dog Bone is an electrical adapter that changes a 50 amp RV plug so that it can plug into the 30 amp socket of a power pedestal. The 30 Amp Male to 50 Amp Female Dog Bone  looks like this;

30 Amp Male to 50 Amp Female Dog Bone  

Of course, there may be a time when you need to plug your 30 amp Rig power cable into a 50 amp power pedestal socket  The 50 amp Male to 30 amp Female Dog Bone looks like this;

 50 amp Male to 30 amp Female Dog Bone 

Plugging in you 30 amp RV into this adapter will not harm your Rig and will give you no more power than what you should have. The reason to do this is often the power socket on the power pedestal is worn or broken and the only good one is the one your power cord will not plug into.  These RV Power Dog Bones let you mix and match to get some power.
So you have stopped by Grandma's house to spend a few days and you need a way to plug your RV into her outside power socket so you can get some lights and keep the fridge going.  What do you need well you need a 15 Amp Male plug to 30 amp Female plug . This little gadget is shown below.

                                                15 Amp Male plug to 30 amp Female plug

While these may not be all the ones you will ever need this group will get you started and cover most of the situations that you will find.  One last bit of information the industry does make Y connector so that you can get 15 amp sockets from both 50 amp and 30 amp outlets from the power pedestal.  I have shown one type below.  I do not use these myself because where I camp has always had 15 amp sockets to plug into if I need to have 15 amps at the power pedestal.  If you have a blow-up boat or kayak you might need this type of Y Adapter with 50 Amp Male Plug To RV 30 Amp and 15/20 Amp Female Connector  Shown below is what it looks like;

Y Adapter with 50 Amp Male Plug To RV 30 Amp and 15/20 Amp Female Connector

I would like to cover the pedestal power combiner.  These devices combine the power outlets of the power pedestal to give you more amps.  For example, if you combine the power output of the 30 amp socket with the power output of the 15 amp socket on the power pedestal you would get 45 amps of power to work with.  Or at least that is the theory.  Again I do not use this type of device as my Open Range 5th Wheel is 50 amps.  But to be fair I am showing you the device. The 45 amp Power Maximizer  The unit is shown below;

The 45 amp Power Maximizer  

Here is a power dog bone that I use all the time.  It is a 50 Amp right angle power adapter that takes the stress off of the power plug mounted to the trailer

.50 Amp Right Angle Power Adapter

Here is the 30 Amp version as well.

30 Amp Right Angle Power Plug

Click on the name of the item to learn more. 


Until next time,

Please remember that this blog is an Amazon affiliate. When you order something through any of the Amazon links, it doesn’t add anything to your cost, but I do earn a small commission on everything you buy. Just click on an Amazon link, then shop as usual.

Keep Track Of Your Tire Pressure And Temperature

I read all the time that one of the biggest fears people have when RVing is a blown tire and the massive amount of damage that it can cause.  But I rarely read about a Fulltimer or a Newbie adding or adjusting a Tire Pressure Monitoring System (TPMS).  Why?  I doubt that every RV sold comes with a tire monitoring system. I just got back from one of the big RV shows and not one 5th wheel that I looked at came with a TPMS nor did a single salesman recommend a tire monitoring system during the sales presentation.  I also read that more than 60% of the RVs on the road today are overloaded or worse that the tire pressure on the RV is below the manufacturer's recommended tire pressure.  To make it worse [if that is possible] many of the  RVs going down the highway, are going at  70 mph or higher. Even though the RV's tires are marked not to exceed 65 mph.  As we get our RVs ready for another season of camping, let's look at what we need to do to be safer going down the road and monitoring our tires.  

1. 

You need to check the tire pressure when the tire is still cold. 

It has been shown, by an  infrared thermometer, that after only 10 minutes of Summer Sun, that the temperature of RV tires have risen above COLD and should not be measured for pressure and thought to be cold.  After you have driven 1 mile the RV tires are not considered cold and should not be tested for pressure as being cold. 

2.
When you stop for gas or a bathroom break, you should do a tire check of the RV as well as the tow vehicle. My daughter was checking the tow vehicle for me and found a large cut in the sidewall of the truck tire.  We were able to get the tire replaced before the large accident occurred.  I did not even remember hitting or running over anything on the highway.

3.
Before starting out on the RVing trip be sure to carefully look at the tread, and the side walls both on the front and the back of the tire.  Most RV tire experts agree that if your RV tires are more than five years old from the date of manufacture [shown in a code on the tire] you should replace them. 

4.
Most tire failures occur when the side wall of the tire is under inflated or rots out from the inside where you can not see. Remember you are riding on air, the tire just keeps the air captured and held in place.  You can thank Mr. Sun for sidewall failure in some cases.  Most tires have a Mr. Sun inhibitor built-in but when a tire sits and sits the inhibitor does not get moved to the outside of the tire by the tire going round and round.  Now you see why you need wheel covers right? Trailer Wheel Covers   for less than $25. 

Trailer Wheel Covers 

OK, I have exposed you to some of the basic safety things you need to do, now let's look at those Tire Pressure Monitoring Systems.
A good system for monitoring your tire pressure as well as the tire temperature is the  Wireless Tire Pressure Monitoring System .

Wireless Tire Pressure Monitoring System

The system will tell you of an overheated tire, in most cases before it blows, and of course tell you of low pressure in any monitored tire, even the spare, in real time. 

• Monitors up to 22 wheels (0-232 psi)
•  Quickly reacts to abnormal pressure or temperature
• Waterproof & Dustproof sensors; 
• Customizable Tire Pressure Monitoring Criteria
• Sensor Alarm system included; Locking Ring to Guard Against Theft
• For use in RVs, SUVs, Caravans, Trucks, & Passenger cars

RV Flow-Through 6 Tire Sensor - Tire Pressure  Monitoring System (TPMS)

RV Flow-Through 6 Tire Sensor - Tire Pressure Monitoring System (TPMS)

• The flow-through sensor with replaceable battery can be secured to prevent loss or theft
• Portable monitor has rechargeable battery and monitors tire pressure 0-199 PSI & temperature
• Monitor tires 24/7: low/high pressure, high temperature, and slow leaks.
• Monitor warning thresholds are user adjustable; low-pressure alert level is per axle adjustable.
• Tire sensor signals have excellent range and not require signal booster for most vehicles

As a lower cost alternative, you can use a screw-on tire pressure indicator, such as Quick-Pressure-PSI-50-Monitor, which at a glance can tell you that you may have a problem [use only if your tires are supposed to have 50 lbs of air when cold. Other pressures are available]  and the traditional pencil like gauge, such as Pencil-Pressure Gage .  

Quick-Pressure-PSI-50-Monitor

Pencil-Pressure Gage 

A low-cost way to check the tire and the tire hub temperatures is to use a non-contact  Infrared temperature gun.  Such as the HDE Non-Contact Infrared IR Temperature Gun Digital Thermometer

HDE Non-Contact Infrared IR Temperature Gun Digital Thermometer

As you stop during your travels you can check the tire temperature and hub of each tire.  They should be with-in a few degrees of each other.  If you find a tire or hub that is very much higher than the rest you should take action to find out why before you proceed.

The first thing you should do is to check the air pressure of the tire that is over heating.  I know that you have been traveling awhile but the pressure in the HOT tire should be with-in a few pounds of the rest of the tires on the rig.  You might want to consider a digital tire pressure gauge such as the NorthONE Digital Tire Pressure Gauge.

NorthONE Digital Tire Pressure Gauge

Just be sure that the gauge you buy can read pressures above those that your tire is supposed to have in it.

To protect the tires in storage from Mr. Sun and any other nasties that come along.  You can also use an RV tire protective spray which is applied, as directed, to the tire side wall that is exposed to the sun.
I have used RV Tire Protection Spray with good luck.  This spray is not designed to make the tire side wall shinier, it is not a decorative spray, but something that is designed to put back into the surface of the rubber what Mr Sun is taking out.

RV Tire Protection Spray

Also note, that if you are going to store the RV for an extended period of time you should protect the tread of the tire from the surface that the tires are sitting on.  Nasty things can leach out of your tires into the blacktop or concrete that your RV sits on while being stored. Or from the blacktop or concrete into your tires during storage.  You can use an  Office Chair Carpet Protector 

 Office Chair Carpet Protector 

as a way to protect your tires during storage.  It is an inexpensive solution to tire protection during storage.

I hope this better explains why it is important to know what is going on with your tires and also helps with the fear factor.

Until next time.

And finally, please remember that this blog is an Amazon affiliate. When you order something through any of the Amazon links, it doesn’t add anything to your cost, but I do earn a small commission on everything you buy. Just click on an Amazon link, then shop as usual.