Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 08-17-2013, 04:08 PM   #1
Senior Member
Retired and Happy's Avatar
Join Date: Feb 2004
Location: Stone Mountain, GA
Posts: 941
50 Amp service at home

I just bought a new-to-us 2005 50A Southwind. I had already installed 30A shore power at home for our older 30A Itasca. Now I need to support the Southwind. Do I really need to install 6 gage wire to a new outlet, or can I continue to use an adapter to the 30A outlet with its 10 gage wire if I let the energy monitor system control the A/C units. As I understand it, the system will not let both A/C's operate at the same time on 30A, but will alternate them to limit current draw.

Ken, Judy, and the Angels--2005 Fleetwood Southwind--2008 Cargo Trailer--2003 EZGO Golf Cart
Retired and Happy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-17-2013, 04:14 PM   #2
Junior Member
Join Date: Jan 2013
Location: San Marcos, TX
Posts: 7
Exclamation 50 amp service

As long as your energy management system is doing what it is supposed to (load shedding) then you should be okay with a 30 amp service. The only difference I see is most RV's with a 30 amp service, just have the one A/C unit. Obviously the RV's with 50 amp service have two A/C units, so that you can run them both at the same time. If your EMS should fail, and both A/C's kick in, you'll just trip your breaker. Thought...turn off the breaker in your RV feeding the second unit.

jmsrbrt is offline   Reply With Quote
Old 08-17-2013, 04:48 PM   #3
Moderator Emeritus
RickO's Avatar

Join Date: Jan 2007
Location: Litchfield Park, Arizona
Posts: 10,530
I think the gauge of the wire is dependent on the length of the run but assuming your 30 amp was installed correctly you should be OK. Sometimes it can be tough to get even one AC running on 30 amp if there are other things in use.

Good luck.

Rick, Nancy, Peanut & Lola our Westie Dogs & Bailey the Sheltie.

2007 Itasca Ellipse 40FD
RickO is offline   Reply With Quote
Old 08-17-2013, 05:05 PM   #4
Senior Member
Ramblin's Avatar
National RV Owners Club
Workhorse Chassis Owner
Ford Super Duty Owner
Carolina Campers
Join Date: Aug 2011
Posts: 2,253
Depends on what you do with your coach while it's at home. If, for instance, you're using as a guest house and you want it to be fully functional, then you'll need the 50A hookup, and the 50A hookup will require #6 wire.

If, on the other hand, you just want to keep the fridge cold and the batteries charged, then the 30A with your EMS will be fine. In fact, for my guests (who I don't want to get TOO comfortable) I'd just use the 30A and let the EMS decide what can run and what can't.
2002 National Dolphin LX 6356
Workhorse W-22 chassis
Don't believe everything you think.
Ramblin is offline   Reply With Quote
Old 08-17-2013, 05:54 PM   #5
Senior Member
dsbear's Avatar
Join Date: Jan 2013
Posts: 628
I have done exactly that for the last 6 months in Houston, Texas. I've had no issues. It will even run both ACs. My Bounder with 30A service ran both ACs. No worries it will work fine if everything on the S&B is wired correctly. I run both ACs the fridge, hot water heater and even occasionally pop some popcorn in the microwave.
dsbear is offline   Reply With Quote
Old 08-17-2013, 06:06 PM   #6
Senior Member
palehorse89's Avatar

Newmar Owners Club
Join Date: Oct 2009
Posts: 8,105
30 amp. service at home will work for you unless you feel the need to fire everything up all at once............ then you will need to re-wire and install a 50 amp. service.
2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
palehorse89 is offline   Reply With Quote
Old 08-17-2013, 06:07 PM   #7
Senior Member
vsheetz's Avatar

Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 12,911
I think you will find your EMS will allow both AC units on 30a service, shedding one if another large power draw comes on (such as microwave). This is how my Fleetwood PA EMS works. When on 50a service it would not shed an AC in the same scenario.

So your 30a service is fine unless you really feel the need to run most everything at once.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is online now   Reply With Quote
Old 08-17-2013, 07:02 PM   #8
Senior Member
Retired and Happy's Avatar
Join Date: Feb 2004
Location: Stone Mountain, GA
Posts: 941
Thanks everyone. This is my first experience with 50A and with EMS. I knew you would have the right answer for me.

As to the 30A Itasca, It came with a switch that would let me select either A/C. I replaced that with a Pulse-Air that automatically alternated the two units on a 7/5 minute cycle. I later separated the rear A/C power and made it capable of running off the gennie, separate shore power, or the Pulse-Air. Now I have to explain how all that works to our daughter who is buying it.

Ken, Judy, and the Angels--2005 Fleetwood Southwind--2008 Cargo Trailer--2003 EZGO Golf Cart
Retired and Happy is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:13 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.