Good Sam Club Open Roads Forum: Using a 30 amp EMS with a 50 amp coach
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in General RVing Issues

Open Roads Forum  >  General RVing Issues

 > Using a 30 amp EMS with a 50 amp coach

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
ShadySkins

Douglassville, PA

Senior Member

Joined: 04/01/2011

View Profile


Offline
Posted: 07/11/18 04:27pm Link  |  Quote  |  Print  |  Notify Moderator

Is it safe to use my portable Progressive Industries EMS-PT30X (30 ammp EMS) with my 50 amp coach (using a dogbone)? We are camping at Frontier Town in Ocean City MD starting next week and will have both 30 amp and 50 amp service available. However, I would feel better using my EMS to plug into the pedestal. So... EMS into 30 amp service, dogbone adapter into EMS and finally 50 amp coach into dogbone.

I literally bought the EMS-PT30X from Amazon 33 days ago and I'm outside my return window.

Unexpectedly we upgraded from a 30 AMP TT to a 50 AMP TT this week and I still want to use my EMS. My TT is prewired for a 2nd A/C, hence the need for 50 AMP service.

Going from a 2011 KZ Spree 321BHS to a 2018 Grand Design Imagine 3170BH


2011 KZ 321BHS
Pulled by a 2007 Toyota Tundra Crewmax 5.7
Connected with a Reese Dual Cam
Stopped by a Tekonsha P3


SoundGuy

S Ontario

Senior Member

Joined: 02/11/2015

View Profile



Posted: 07/11/18 05:04pm Link  |  Quote  |  Print  |  Notify Moderator

ShadySkins wrote:

Is it safe to use my portable Progressive Industries EMS-PT30X (30 ammp EMS) with my 50 amp coach (using a dogbone)?


Totally. Be aware that in another concurrent thread one forum member ran into a situation where the park has rules against plugging any rig wired with 50 amp service into a 30 amp campsite service. Have never seen this before but apparently it's happening more and more. Can't say whether you would run into any restrictions on a site offering both 30 amp & 50 amp service. I suppose a better long term solution might be to sell the 30 amp EMS you just bought and use the proceeds to buy the 50 amp version, even though it'll cost.

ScottG

Bothell Wa.

Senior Member

Joined: 02/25/2005

View Profile


Offline
Posted: 07/11/18 05:29pm Link  |  Quote  |  Print  |  Notify Moderator

You will be perfectly safe using the 30A EMS.


Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2018 Silver Fox 32A - many mods to come!
H0NDA eu2000i

ShadySkins

Douglassville, PA

Senior Member

Joined: 04/01/2011

View Profile


Offline
Posted: 07/11/18 05:38pm Link  |  Quote  |  Print  |  Notify Moderator

SoundGuy wrote:



Totally. Be aware that in another concurrent thread one forum member ran into a situation where the park has rules against plugging any rig wired with 50 amp service into a 30 amp campsite service. Have never seen this before but apparently it's happening more and more. Can't say whether you would run into any restrictions on a site offering both 30 amp & 50 amp service. I suppose a better long term solution might be to sell the 30 amp EMS you just bought and use the proceeds to buy the 50 amp version, even though it'll cost.


Thanks for the feedback. I just recently read that entire thread [emoticon]

In the meantime, Amazon is letting me return it outside the return window as a one time courtesy. I literally just ordered the 50 amp version.

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 07/11/18 05:42pm Link  |  Quote  |  Print  |  Notify Moderator

Safe, yes. But you may find it quite limiting to the needs of a 50 amp power center. Why? Because 30 amps is 3600 watts, and 50 amps is 6000 watts on two legs (12,000 watts in total).

I'd suggest you try to sell the 30 amp--and upgrade to a 50 amp.

The weird part is that for 50 amp a good EMS is much more important. A loose or poor neutral connection can fry one leg of your RV in short order.


Regards, Don
Full Time in a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  General RVing Issues

 > Using a 30 amp EMS with a 50 amp coach
Search:   Advanced Search

Search only in General RVing Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2018 CWI, Inc. © 2018 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS