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08-27-2021, 04:54 PM #21
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What you did was the correct procedure.....checking/verifying voltage before bypassing. Lots and lots of people simply do not know how to do that and in that case, it really should not be bypassed. I always carry a meter with me also....in fact, I have one that I can check DC amperage also. That one is how I discovered the current flow on my hydraulic system when the pump was running for the slide and the leveling system. I had an OEM 50 amp breaker that was kicking out sometimes....turns out the pump motor pulls right at 70 amps.
2016 F350 CrewCab Dually
2018 Momentum 394M...Heavily Modded!
2023 Suzuki GSX-S1000 GT+
Excessive Payload is a Wonderful Thing
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08-27-2021, 05:36 PM #22
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- Oct 2017
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- Spencerport, NY
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Hi Chad,
Yes, I bypassed my Progressive Industries EMS as well. What I learned was when voltage drops below 104 volts, the EMS shuts power down until voltage returns to more than 104 volts. I just purchased a Hughes Autoformer that plugs in between power source and RV. It will boost voltage upto 10%. Going to test it out this week.. Fingers crossed.
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08-27-2021, 05:52 PM #23
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- Apr 2017
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08-27-2021, 07:44 PM #24
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- Sep 2018
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- Washington state
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08-27-2021, 08:07 PM #25
I never used an EMS in my previous 30 amp trailers. Now that I have a trailer wired for 50 amps I too would be uncomfortable traveling without it. Like you I carry a digital multimeter and was able to confirm the issue the one time my EMS has blocked low voltage.
I have a Progressive Industries EMS but did not realize it would help in the event of a lightning strike. To me that is a different event from a power surge. Time and extreme voltage being the difference.2020 Reflection 273MK
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08-28-2021, 08:37 AM #26
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- Aug 2017
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- Florida Space Coast
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Larry KE4DMG
2022 F-350 KRU SRW LB - Airlift 5000+, ForScan, 37 RDS Aux Tank,
2019 310GK-R - Sailuns; MorRyde IS; Disc Brakes; 20K Reese Goosebox
Search kalakamods for my mods
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09-01-2021, 02:30 PM #27
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- Dec 2018
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- Phoenix is now Base Camp
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09-01-2021, 02:47 PM #28
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- Jul 2020
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- move around
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I've had my ems shut down power due to low voltage about 10 times over the last couple years. On older parks most of the original parks were built on a single circuit 30 amps and 50 amps many times an added 2nd new circuit without switching by daisy chaining the old 30 amp circuits so that side takes most of the load during peak times like 4th of July or labor day weekend.
I did once run into one leg dropping to less than 10 volts due to a bad park panel. If it had not been for the ems that would have caused damage undoubtedly. Considering the cost of a new 15 ton ac/heat pump coleman mach 3 ill take a hard pass on the by pass. Ymmv2019 Solitude 377MBSR
2018 RAM 3500 LB dually CC 4x4 deisel
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09-01-2021, 02:49 PM #29
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- Jan 2021
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We have had the EMS take us offline for;
1-a bad ground (corroded pin) that was easily remedied
2-Voltage too high (Storage lot)
3-Voltage too low (Storage lot)
In all three cases the issue didn't affect us in any meaningful way. LOL...this is our 3rd trailer in that storage lot and the first one with an EMS installed. It had been happening to the prior two trailers for years...I was just none the wiser. However, I did have neighbors in that storage lot that gave me lots of business chasing electrical gremlins in their trailers (microwave, converter, etc)...I just never knew it was our lot doing the damage.
I have often wondered how this would play out if it happened to us while out on the road. Think about it, landing after a long day's drive...ready to get things set up and relax then the EMS takes you off line. I can tell you now it would be VERY unlikely the wife would consider moving...I use www.campgroundreviews.com to select parks and look closely for power issues in the comments...hopefully that will save me the grief.
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09-01-2021, 03:13 PM #30
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- Feb 2021
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- Minnesota
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I didn’t use one on my 2008 Jayco. Went 13 years without a problem. I actually didn’t even know about surge protectors and EMS’s until we bought our 5th wheel and I started reading these forums. I guess I think spending $350 for a Progressive unit is pretty cheap insurance to protect a 50k fifth wheel. I think this is the last rig we will ever buy and I’m not taking unnecessary chances.
Mike & Linda
303RLS
2013 F250 Turbo Diesel Crew Cab
Channging Battery Type?
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