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Old 03-11-2016, 04:38 PM   #1
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Question about inline Surge Protection

We have a 2016 Ventana 4369 on order with factory pickup scheduled for May 9. We plan to have a surge protection device installed (like the Progressive EMS-HW50C), and I've read other posts on this forum that mention their surge protection is installed in the power reel bay, but it is set-up to be bypassed if necessary (e.g., if it fails, to include the auto former, etc.) . My understanding of this is that instead of "hard wiring" the unit in the path of the shore power, it can be "unplugged" or "plugged in" in case of failure. The same goes for an Auto-Former. So my question is - if having a unit that can be unplugged (for whatever purpose) is the right way to go, does it make sense to buy the one that is designed to be used at the post (EMS-PT50C) in the campground instead of the in-line version because the post model will already have the pigtail wires/outlets on both ends? I don't think the difference in cost of the two units is that much (approx. $20 more for the post unit), but would we save money/time on the installation? Are there other considerations (weight, monitoring, mounting, etc.)? Thank you for you help and advice.
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Old 03-11-2016, 04:54 PM   #2
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The Progressive Industries EMS HW50C by-pass switch should only be used after consulting Progressive. They can help insure you are safe taking that action. If you put it in bypass it will still act as a surge protector! The other features are disengaged, hopefully just temporarily!
Another point, most folks apparently install these to protect them from bad shore power, thinking the genset is self protecting (so Onan makes it sound). On my previous coach it had been installed after the transfer switch so it protected me from bad power from the genset or the shore! While dry camping I noted my genset had not cut off as expected (I had AGS engaged) and checked my Progressive display and it had disconnected the genset power and gave me the code for over voltage which was at 140-145! It took two visits to the Cummins shop to find out what the problem was with the genset (it was transformer and they never answered my question as to why it occurred.) That is when I found out how it had been wired and I just installed the same unit the same way in this coach which we bought last year.
Enjoy your new coach!
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Old 03-11-2016, 05:13 PM   #3
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Hi woodosgood,
I have this set up in my coach. Both the surge protector and the power transformer are able to be removed from the incoming power circuit. I personally have not had a problem. However, when I used to host NKK events there were numerous members that suffered a surge protector failure and their coach was without power because the surge protector had given up its' life and would not pass power. Go to http://www.irv2.com/photopost/showphoto.php?photo=18089 and see my interior electric bay. The power transformer is front an center, the surge protector is in the rear, on the floor.

This picture http://www.irv2.com/photopost/showphoto.php?photo=18090 shows some of the receptacles and plugs. The main shore power cord comes into the bay on the lower right.
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Old 03-11-2016, 05:13 PM   #4
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Quote:
Originally Posted by woodosgood View Post
We have a 2016 Ventana 4369 on order with factory pickup scheduled for May 9. We plan to have a surge protection device installed (like the Progressive EMS-HW50C), and I've read other posts on this forum that mention their surge protection is installed in the power reel bay, but it is set-up to be bypassed if necessary (e.g., if it fails, to include the auto former, etc.) . My understanding of this is that instead of "hard wiring" the unit in the path of the shore power, it can be "unplugged" or "plugged in" in case of failure. The same goes for an Auto-Former. So my question is - if having a unit that can be unplugged (for whatever purpose) is the right way to go, does it make sense to buy the one that is designed to be used at the post (EMS-PT50C) in the campground instead of the in-line version because the post model will already have the pigtail wires/outlets on both ends? I don't think the difference in cost of the two units is that much (approx. $20 more for the post unit), but would we save money/time on the installation? Are there other considerations (weight, monitoring, mounting, etc.)? Thank you for you help and advice.

We have the Progressive EMS-PT50C http://www.progressiveindustries.net/#!ems-pt50c/c1ma0.

I like that I can plug it into a pedestal before even backing into a site to ensure that the power is OK. I can feel comfortable that the power is OK before connecting my MH in any way. Also if there were some sort of catastrophic issue with the power or failure with the unit, it's outside my MH.


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