Affordable 50 amp surge protector?

[chuckster57]

IIRC it was this one

https://www.amazon.com/Smart-RV-Surg...v+surge&sr=8-9

I have no idea where the original post went, maybe it was zapped by lightning.

[jsmith948]

Get an analog voltage meter that you can plug into a 120v receptacle.
It has no automatic protective features - won't shut the power down for you - but will give you an "at a glance" reading of the ac voltage in your trailer.
I got mine at Camping World, but, I think you could find one at one of the big box stores.

Not saying you don't need an EMS or surge protector of some kind. Just saying it would let you know if you have a high or low voltage issue and give you some peace of mind at the campground until you get delivery of your EMS. BTW, I would also carry a multi-meter and a cheap polarity tester.

[JRTJH]

It looks to me like the "class of surge protector" being discussed is the SURGE GUARD 50 series.

According to Progressive Industries, the manufacturer, the following FAQ's should warn buyers that this is a "LIMITED PROTECTION" device. The following FAQ's are from the SSP questions:
https://www.progressiveindustries.net/faq
Q: Will these models provide voltage protection?
A: No. The surge protector models do not include voltage protection. The surge protectors strictly provide protection during an actual power surge. However, Progressive Industries surge protection units have additional features which include a built-in surge status indicator that note the condition of the surge protector, plus a dual line polarity tester that checks the status of the source prior to use. For complete protection, we recommend our EMS units.

Q: Will these models provide wiring protection?
A: No. The surge protectors do not provide wiring protection. They will identify an improper wire condition and will also shut off power if there are other conditions that are considered unsafe.

The EMS series actually "disconnects the RV from the power source if it tests unsafe" The SSP series does not do that, it only "warns of the condition"....

The only "protection" provided by the SSP models (the ones with the 3 lights on the faceplate) is a visual indication that something is wrong. THEY DO NOT SHUT OFF LOW VOLTAGE POWER TO PROTECT THE RV.

The EMS that you want (if you're buying this brand) is the EMS-PT50X. It has a monitor circuit AND will shut off power to the RV if there is a high or low voltage condition.

The SSP products will only "light LED's to warn of a problem while the RV receives the damaging voltage"
The EMS products will "TURN OFF VOLTAGE TO PROTECT THE RV.

The two models in this thread are SSP-50X and EMS-50X My recommendation is to steer clear of the SSP series......

[mwemaxxowner]

I went with a bluetooth Power Watchdog from Hughes for now. I will have a true EMS before next camping season, but for now this will do, IMO. It is a standard surge protector, but it does have a replaceable surge unit. It will tell you upon plug in if you have an open neutral, open ground, "L1 and neutral reversed". Aside from that, you can connect via Bluetooth and monitor wattage, amps, voltage, and KWH used. You can set custom alarms if any of the parameters rise above or below range.

It's also neat for me to watch amp and watt usage in real time and see the changes certain appliances make, and gives me a good feel for what I would be able to run with a generator of a given size.

It will not shut things off for me if voltage is low, but it will allow me to monitor the park power from inside my camper.

https://hughesautoformers.com/product/pwd30/

They have a 50 amp unit also.

[Preyou]

I have the Progressive 50 amp. Went into park, plugged it in and voltage read 250. Pulled it out and went to another park and it read 120. Probably saved my electronics. I always plug it in first and check readings. If OK then plug in RV power cord.

[sourdough]

Sorry for the late post but I've been on the road for 3 days.

For the OP; if you can't get the EMS or anything else, take a VOM and use it. It will not protect you real time for an extended period but it will give you a look at the status of the power at the plug at "that moment in time" including grd/neutral/reversals/low-high voltage etc. I used to use one all the time and then.....I got an EMS!! Now THAT'S glamping!!

[Snoking]

The really important thing about 50AMP service is to have protection from a lost neutral. That will fry most/all the AC items that are plugged in. In a pinch I would use a 50A to 30A dog bone as 30 amp service does not create this condition of putting 240V across 120V items in the trailer if the neutral is lost.

The PI Hardwired EMS is the best as it protects against a shore power cable issue and the power inlet/cable reel issue if you have one. Chris

[bobbecky]

There have been quite a few rigs damaged with a 30 amp outlet that has been miss wired with a hot leg to the neutral terminal in addition to the proper hot terminal which puts 240 volts into the rig.
A few hundred dollars spent on a quality EMS device is very cheap insurance to protect these rigs from a lost neutral or a lost ground or high or low voltage. Any of these conditions can damage the rig or a person that becomes the ground if the ground is missing from the pedestal. Like the old ad said, pay now or pay later, or the Dirty Harry quote-"Do you feel lucky?".

[Snoking]

I had 30 amp rigs for decades and never had an issue, including no converter failures. I now have two 50a rigs(a 5th wheel and a TT) and both have PI HW EMS' with remotes.

Chris

[KeyCougar]

After careful consideration I decided on the Camco model... I did some research and found it was the best fit for my whole covering of both the low and high voltage... thanks everyone for your help.

[Snoking]

Originally Posted by KeyCougar

After careful consideration I decided on the Camco model... I did some research and found it was the best fit for my whole covering of both the low and high voltage... thanks everyone for your help.

I do not see where that unit will drop the circuit if neutral goes away.

*Voltage protector protects your RV from excessive voltage and power surges
Automatically disconnects when dangerous voltage levels are detected

It has lights to indicate issues:

The water-resistant unit incorporates diagnostic lights for visual indication of faults for reverse polarity, open neutral and other power-pedestal wiring issues.


Light might be on after things burn up for loss of neutral. Am I missing something?

PI EMS unit states: Open neutral protection
(one of the most important features)

I can not find the Defender manual online to read about it in more detail. Chris

[sourdough]

I don't know that I would be comfortable with that unit. First, a readout is mandatory to me simply because it is handy and right here/right now without referring back to the "ledger" or whatever they call it.

Secondly, I don't think this unit protects you from the loss of neutral or other "stuff". It appears it will try to protect you upon startup but after that it will just notify you that your appliances were fried...after the fact as best I can tell.

"Protects your RV from dangerous high (>132 VAC) and low (<102 VAC) voltage levels
Automatically disconnects from dangerous voltage and reconnects after power stabilizes
Shows faults for reverse polarity, open neutral, and other power pedestal wiring issues
Integrated surge protection: 3,850 joules power rating for 50 Amps
Diagnostic lights for visual indication of fault
Protects your RV from dangerous voltage levels
Automatically reconnects after power stabilizes
Cautions user of power outlets wired with reverse polarity and/or voltage on ground
Integrated surge protection
Diagnostic lights for visual indication of faults"

"Protect your RV and appliances from high or low voltage levels and surges with Camco’s PowerGrip Voltage Protector and Circuit Analyzer."

"Once connected, it has a series of diagnostic LEDs that indicate the status of the source circuit. When compared to the key, different lighting combinations will alert you of any electrical issues. The voltage protector protects against faults for reverse polarity, open neutral and other wiring issues and will not let power through to the RV if any of these conditions are present during initial startup. Following startup, if the lighting sequence matches 'Power OK', then power will be supplied to the RV. In the event of a power surge or high/low voltage levels through the power pedestal, power will be disconnected and will reconnect only after the normal operating conditions have been restored. "


All of those descriptions sure sound to me like you won't have much of the protection other EMS units provide past startup. Trying to interpret "keys" is nonsense in this day and age. It specifically states "following startup" it apparently only protects against power surge and high/low voltage - one small step above a surge protector and not, from what I can tell, in the same ballpark as Surge Guard and Progressive...but extremely costly for what you get. I'm not a big fan of Camco and have never bought a product from them that was "top of the line" but that's JMO.

[Preyou]

Let us know your experience

[Snoking]

Here is a good write up about it. http://www.henrylahore.com/rv/rv%20s...rotection.html

Back in the late 80's early 90's I had a electrical contractor lift neutral to a circuit that feed the back room computer equipment on a floor of one of the banks high rises in down town Seattle. They ended up paying 10's of thousands of dollars for new equipment.

I had a friend plug his American Eagle MH into a park outlet in California and the bill was over 10K to replace "things".

This a very important issue to 50 service RV, and one wants the best protection available.

Like I said earlier in the thread, we have two RV trailers and both have the hard wired PI EMS with remote displays at the electrical panel. Top item in both pictures.

[Rinsrig]

Consider the fact that if you do not have a surge protector of some form on your RV, your warranty will not cover any damages caused by power surges if there is no surge protector in place.
Even if you don't have it under warranty, the chance of a fire is greatly increased when you get power surges from shore power.

[cliff]

We bought a Surge Guard many years ago when all it had was a couple of lights. It has been used at every hook-up and we were grateful we bought this "insurance." We were at a campground where the neutral opened (aluminum wire) putting 220 Volts across the pedestal. The other campers around us lost TV's, inverters, power supplies, etc. Our simply shut off with no damage. this has happened to us twice. So send the bucks for the EMS because it is cheap compared to the damage without it.

[itat]

I have the hard wired 50A Progressive Industries EMS. I've installed a PI EMS in my last 3 campers. I like the security of having the hard-wired version but it sure would be nice to be able to plug in the portable before even backing your trailer into the campsite. When we had the 30A trailers, I used this Prime Products Power Line Monitor with a 30A-M to 15A-F adapter to check the 30A receptacle, but there's no such thing for a 50A. So, I've gotten into the habit of using a multimeter to check the 50A receptacle in the pedestal before plugging in.

[LewisB]

Thanks to everyone for all the great responses! This is an expense I have been putting off - you guys have convinced me to do the right thing!

I just ordered a new Southwire Surge Guard #34951 and a #40301 monitor. This is the same EMS as the 34950 shown on the Southwire site but also includes an internal (bluetooth?) communications system to a remote wireless monitor. This gives complete protection and management features and allows remote monitoring of current levels, etc. Pretty slick system - but not cheap.

Here are the links to a couple of videos - I like this company where I made the purchase. Good website, great videos.

https://youtu.be/2ex3uVoHRgE?t=11

https://youtu.be/-u2umT-zbes?t=40

[mpellet723]

I use a 50 Amp Surge Guard on My Keystone 29rld which I bought last September.
It has saved me twice.
I would no connect to a campsite with out it.

[roadrunnernm]

I bought a 50A Surge-Guard (hard-wired) as soon as we bought our 2007 Montana fiver. I could not imagine going on the road without one. With this installed, We have don't have the surges that cause light to suddenly glow brighter, have not even popped a bulb on the 120V side, while have had to replace some on the 12V side. The guard offers a lot of protection for the microwave, refrigerator, all the heating systems, air conditioners, etc. We got ours from Amazon.