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Old 09-23-2018, 07:17 PM   #1
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RV Electrical Concerns - EMS

We have a Progressive Industries Energy Management System EMS-HW30C on our Winnebago Motorhome which I installed myself about two years ago and it was a very easy installation. This is not just a surge protector and you can read about its capabilities at Progressive Industries EMS-HW30C. When we were at the Boomer Rally in Perrin in September the EMS alerted us to a reverse polarity outlet at the site we were assigned. When we reported it to the management they told us that it had been reported before but it obviously had not been corrected. The EMS prevented the connection from being completed and we used a 50 to 30 dogbone to connect to the 50amp circuit which was not wired incorrectly. We had encountered a similar problem many years before in our 40í HR DP and it messed up the energy management system on that motorhome because that EMS didnít offer the same protection that current models do. Unless you have a high end motor home you do not have an EMS comparable to the one we have no matter what the RV salesman told you. This unit will keep you from connecting to outlets that will harm you or your RV and it also acts as a surge protector, but goes far beyond the one you bought at Wal-Mart. The hardwired version is a little cheaper than the portable unit but you wonít have to worry about it walking away like the portable. I know some of you have already installed this type of EMS in your unit but I encourage the rest of you to consider doing so. There are similar models by other manufacturers but they are Energy Management Systems not surge protectors. This applies to all types of RV's, motorhome, travel trailers, fivers, etc.
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Old 09-23-2018, 07:28 PM   #2
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Thanks for Sharing...
For more info on EMS's... See this post which is currently pretty active:
Email asked are EMS's necessary
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Old 09-23-2018, 07:52 PM   #3
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Good advice, Frank!
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Old 09-23-2018, 08:08 PM   #4
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Now that is interesting. We have the Progressive hardwired unit-EMS-HWS50C which is 50A and were also at the Perrin Rally. On 9/5/18 starting at around 4pm, our EMS shut us down (3) in about 1 1/2hrs with the error code showing High Voltage on L-1 or L-2. Each time the coach rebooted and finally had no more incidences that day. The next day, 9/6/18 at about 9pm we lost ac power (2) times in about 5-10 minutes before the mh system rebooted itself and stayed on. Both times the error message showed High Voltage on L-1 or L-2. We had no further issues and left on 9/13/18. The manager of the cg responded on the first incidence with a meter and the incoming power showed 124.4v. My point is I agree with ur recommendation that folks should seriously give thought to have this type of system on their rv. Without it, you would probably not be aware of miswiring, low voltage or voltage spikes until the damage has been done.

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We have a Progressive Industries Energy Management System EMS-HW30C on our Winnebago Motorhome which I installed myself about two years ago and it was a very easy installation. This is not just a surge protector and you can read about its capabilities at Progressive Industries EMS-HW30C. When we were at the Boomer Rally in Perrin in September the EMS alerted us to a reverse polarity outlet at the site we were assigned. When we reported it to the management they told us that it had been reported before but it obviously had not been corrected. The EMS prevented the connection from being completed and we used a 50 to 30 dogbone to connect to the 50amp circuit which was not wired incorrectly. We had encountered a similar problem many years before in our 40’ HR DP and it messed up the energy management system on that motorhome because that EMS didn’t offer the same protection that current models do. Unless you have a high end motor home you do not have an EMS comparable to the one we have no matter what the RV salesman told you. This unit will keep you from connecting to outlets that will harm you or your RV and it also acts as a surge protector, but goes far beyond the one you bought at Wal-Mart. The hardwired version is a little cheaper than the portable unit but you won’t have to worry about it walking away like the portable. I know some of you have already installed this type of EMS in your unit but I encourage the rest of you to consider doing so. There are similar models by other manufacturers but they are Energy Management Systems not surge protectors. This applies to all types of RV's, motorhome, travel trailers, fivers, etc.
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Old 09-25-2018, 07:03 PM   #5
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Jerry, we have the hard wired PI EMS. We have seen the high voltage on one leg when you have a low voltage and high amp on the other leg. I think it has to do with a bad neutral in the feed to the coach.

Ken
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Old 09-26-2018, 07:24 AM   #6
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Ken
Are u talking about the wiring inside the pedestal or wiring within the coach itself? Our electrical issues have only occurred at (2) cgs; the one in Perrin, Tx and our current one here in Mo. We had been at the Mo one right after we got this coach and had no issues. The ac shutdowns only reared their ugly head this time. We had now gone 4 days without losing power here. Might try and call u in the next couple of days if ur available.


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Jerry, we have the hard wired PI EMS. We have seen the high voltage on one leg when you have a low voltage and high amp on the other leg. I think it has to do with a bad neutral in the feed to the coach.

Ken
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Old 09-29-2018, 07:01 PM   #7
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Jerry, it could be either the campground wiring or the wiring up to your EMS. While the poser is down, and 12 volt is shutdown to the inverter, check all of you electrical panels and connections. If you have a power cord reel, check the connections to it as well.


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Old 10-01-2018, 04:55 PM   #8
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Quote:
Originally Posted by TXiceman View Post
Jerry, it could be either the campground wiring or the wiring up to your EMS. While the poser is down, and 12 volt is shutdown to the inverter, check all of you electrical panels and connections. If you have a power cord reel, check the connections to it as well.


Ken
Ken,

I am slowly coming to the conclusion that the electrical "high voltage" issues(s) that I've had recently at (2) different parks out of (5) over the last several weeks is caused by the wiring/overall conditions of these (2) parks themselves. Both are older parks that have "upgraded" their wiring and who knows what else. No further issues for over a week now so will just let sleeping dogs lie.
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Old 10-03-2018, 07:40 PM   #9
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Jerry, just keep believing your EMS

Ken
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