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Old 05-28-2015, 08:53 PM   #21
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EMS = electrical monitoring (or management not sure) system

Safeguards TT from over/under voltage situations. Common wiring problems. Surge protection. I sure there is more but this is what I recall.

Commonly people use Products from Progressive Industries and SurgeGuard. They can internal or external to the RV and cost $200-$300.

I never leave home with out my SurgeGuard 30A external EMS.

2007 Chevy Duramax LMM/Allison
2012 Jay Flight 29QBH
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Old 05-28-2015, 09:07 PM   #22
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1. Equalizer hitch with sway control
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Old 05-28-2015, 10:33 PM   #23
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Originally Posted by Icescreamer View Post
Can someone shed some light on what an EMS is? Seems like a lot of you are recommending it and I have no idea what you are talking about.

Appreciate any insight.
An RV Electrical Management System protects your trailer and all the electronics from surges, spikes, and damaging conditions from faulty shore power supplies in campgrounds. I've provided a link to a very good model for 50 amp. They also make them for 30 amp. They aren't cheap, but just consider it cheap insurance - compared to the kind of damage that can occur.


I plug mine into the shore power pedestal before I unhitch. When plugged in, it will tell you if there are any problems with the power supply. If there is, I move to another site. It will also protect from low voltage (which can damage your A/C) and other dangerous conditions.

You can have them hard-wired into your trailer, but then it's a pain to remove when you trade. However, the portable can be stolen. So it's a personal decision as to which way you go. I chose portable - I've never had anything stolen in a campground.

Scoutr2 (Mike)
2015 Jay Flight 32RLDS Elite
2012 Chevy 2500HD Crew Cab LTZ (6.6L Duramax/Allison)
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Old 05-29-2015, 12:20 AM   #24
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Old 05-29-2015, 07:55 AM   #25
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Old 05-29-2015, 08:05 AM   #26
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EMS = Energy Management System. It's a device that has a built-in surge arrestor and will shut off the power if the voltage rises too high or dips too low, thus protecting all your electronics and other electrical devices in your RV. It will also protect against other electrical problems caused by miswired pedestals, such as a floating neutral, hot ground, 240v across the 120v legs, etc.
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Old 05-29-2015, 08:55 AM   #27
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Old 05-29-2015, 10:14 AM   #28
Join Date: May 2015
Location: Fairfax
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Having just completed the delivery portion of such a transaction yesterday (trailer and the 3-things)
- New Equalizer WDH
- Beefier chocks
- Husky 4500lb jack with remote

I already had purchased the Husky which I pulled back off our old trailer before trading it, but it's going to replace the jack that came with my trailer. It *really* sounds like it struggles and it's very loud, unlike the Husky. Plus the Husky has the remote - so back up using truck's camera, use the jack remote control to lower the tongue, park, hop out and lock coupler, and done.

X-Chocks would be a runner-up, but I had those already as well.
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Old 05-29-2015, 08:21 PM   #29
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Excellent, thank you all for the great info. An EMS will be added to the must have list.
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Old 05-29-2015, 10:35 PM   #30
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Well for me it was a sewer hose, water filter, and WDH to bring it home. Fourth item was a mattress topper after one night sleeping on a very hard board. Quickly followed( just minutes) by a flat screen tv.

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