Thread Tools Display Modes
Old 03-18-2020, 01:32 AM   #1
Join Date: Mar 2017
Location: Midwest
Posts: 94
EMS's PI vs Hughes surge protectors

After reading the huge "Do I need a surge protector" thread (which was great BTW). I have been researching one to pick up.

Is there a clear cut one is better then the other.

Looking at the Hughes Autoformers PWD50-EPO-H VS Progressive Industries EMS-HW50C.

They are within 50 bucks of each other. I kinda like the app for the watchdog and how it will fault for an open neutral.

Like the lifetime warranty of the PI vs the 3 year of the Hughes.

Anybody here like one over the other?
2015 Rockwood 8282WS
Signature Ultralight Diamond Package

2017 SCSB F-250 6.2L
2000 F-350 dually 7.3L
Scoob is offline   Reply With Quote
Old 03-18-2020, 06:19 AM   #2
Canadian Member
Join Date: Feb 2012
Location: Eastern GTA, Ontario, Canada
Posts: 5,227
For me, the only negative with the PI is the wired remote. Otherwise its a great EMS.

I like the Bluetooth on the Hughes product but don’t know if its reliable and if it will automatically reconnect to your phone when you return to your trailer. Need to make sure your phone doesn’t die, too.

If you’re interested in their autoformer, I’d see if Hughes is willing to give you a package deal on both the EMS and the autoformer.
2019 Rockwood Signature 8290BS, Reese Revolution pinbox and B&W Patriot 18K hitch
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)

itat is offline   Reply With Quote
Old 03-22-2020, 12:25 PM   #3
Junior Member
Join Date: Dec 2019
Posts: 7

We have the Power Watchdog EPO 50A hard mounted in our 5th. Absolutely swear by it. It has “saved” us on one trip at a campground - open neutral. Plus the Bluetooth app on my phone, I can see each leg and the voltage being applied.

After plugging into the power pole and flipping the breaker on, in about 5 seconds, I hear a faint “thunk”, indicating that the power supply/pole all is good and power being sent to the RV. On the time when there was a neutral fault, after I didn’t hear the “thunk”, I looked at the Bluetooth app and it told me what the problem was and I notified the park mgmt. They came right out with the repair man and fixed the power pole and all was good.

This was just my one experience with a bad power pole, and all other travels haven’t had a problem, but, soooo thankful my new 5th was protected.
Hijo202 is offline   Reply With Quote
Old 03-22-2020, 01:27 PM   #4
Senior Member
SailorSam20500's Avatar
Join Date: Jun 2016
Posts: 3,267
I've been following Mike Sokol's RV Electricity discussions and have attended in-person seminars that he has put on. A couple of notes:
1. Apparently the NEC seems to be heading toward putting language in the NEC that prohibits use of Autoformers. Not final yet, but seems likely for the 2020 release.
2. As of last August, Mike was recommending the Southwire Surge Guard as the best product on the market. Apparently Southwire has added additional protections in their product that no one else offers and will be patented by Southwire. Mike got into Southwire's design lab to see how it worked and was impressed (initially he didn't think what was added was even possible).

Full disclosure - I have a hard wired PI unit now. If I were buying new today, I'd get a Southwire unit.
Save the Earth. It’s the only known planet with Beer.
There are times where my greatest accomplishment is keeping my mouth shut...

S.E. Mich. Flagstaff 26FKWS / 2019 F-150 3.5 EcoBoost SCrew Propride
SailorSam20500 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -5. The time now is 11:47 AM.