Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-22-2016, 10:01 PM   #1
Winnebago Watcher
 
Join Date: Jul 2016
Posts: 4
Why 30 amps when U have 2 AC's

I don't understand why Winnebago would install two AC's that can only run off the generator if you wish to use both together, if you have the 30 amp shore system. Why not have a 50 Amp system to run whatever your motorhome has off of shore power?

Maybe they just forgot like this condo built by builders with large bladders:

Mississauga condo developer forgets to put 120 bathrooms in brand new building - Home | This is That with Pat Kelly and Peter Oldring | CBC Radio
rsn48 is offline   Reply With Quote
Old 09-22-2016, 11:57 PM   #2
Winnie-Wise
 
Skip426's Avatar
 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 339
The satirical story about bathrooms is one thing , for a real life [Moderator Edit], a senior's living complex in Kelowna B.C. built, and specified , to be wheel chair access , had all the entry doors with the door handles at the wrong height, for wheel chairs .

Carpenter friend spent 3 weeks ripping out brand new doors and frames ; doors they could salvage ; frames were scrap. on 80 units , in a four story complex , before the elevators and central air conditioning were operational. In July .

He was not a happy camper.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 09-23-2016, 12:19 AM   #3
Winnebago Camper
 
adamfolger's Avatar
 
Join Date: Aug 2006
Location: MotherLoad foothills approx.60 m.s east of Sacramento
Posts: 26
OP...30 amp coach electrical systems are less expensive to manufacture than 50 amp systems. You have two air units because one unit will not reach all areas of the coach. The bedroom is isolated from the front air unit. Some 30 amp 2 unit air systems have an electrical default which allows two units to cycle on and off at different times with out overloading the 30 amp. I cant tell you which ones but there are some. When I had my gasser class A My single unit went bad and I would have been happy to have a second one to fall back on.


In my opinion All Rvs should have 50 amp systems. Some new coaches are running very close to overloading their 50 amp ( 100 amp available ) systems. WE WANT MORE STUFF!!!
__________________
Full time since Nov 2012 RVM#41 Gary and Marian Hill 2001 Monaco Dynasty Jack 38' 370 hp ....If it ain't broke I can still fix it.
Like putting shoes on an octopuss, so are the days of our lives....
adamfolger is offline   Reply With Quote
Old 09-23-2016, 03:55 AM   #4
Winnebago Owner
 
Triker56's Avatar
 
Join Date: Jun 2009
Posts: 107
My MH and most Fleetwood 30 AMP MH's have a EMS that allow both AC's to run the same time. If you start the microwave while they are both running the EMS will shut one of the AC's off until the microwave is done. Then the AC will start again.

Fleetwood use Coleman PS units. Usually the front AC is 13.5 btu and rear 11.
__________________
99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
Triker56 is offline   Reply With Quote
Old 09-23-2016, 06:00 AM   #5
Winnebago Owner
 
Forza Tom's Avatar
 
Join Date: Sep 2015
Posts: 128
Quote:
Originally Posted by rsn48 View Post
I don't understand why Winnebago would install two AC's that can only run off the generator if you wish to use both together, if you have the 30 amp shore system. Why not have a 50 Amp system to run whatever your motorhome has off of shore power?

Maybe they just forgot like this condo built by builders with large bladders:

Mississauga condo developer forgets to put 120 bathrooms in brand new building - Home | This is That with Pat Kelly and Peter Oldring | CBC Radio
We had a 2007 Sightseer that was a 30 amp unit with 2 A/C and it worked just fine. The front unit could be run off of shore power only and the back unit could be run off of either shore power or direct from the generator.

When hooked into 30 amps running both off shore power was fine with the PMS. Where the option came in handy was on the occasion you had only 20 amp plug in. You could run the front AC and the rest of the coach off the short power and when you need additional AC you could fire up the generator and run the back AC.

We have recently upgraded to a new unit with 50 amp service and we don't have that option. I miss that option.
__________________
Tom & Denise N
2016 Winnebago Forza 36G Freightliner XS-C, Cummins 340HP, 2011 Ford Edge
Uniontown, OH
Forza Tom is offline   Reply With Quote
Old 09-24-2016, 02:12 AM   #6
Winnebago Camper
 
adamfolger's Avatar
 
Join Date: Aug 2006
Location: MotherLoad foothills approx.60 m.s east of Sacramento
Posts: 26
Most coaches ( if not all ) the gen set overrides the ped power, so...?
__________________
Full time since Nov 2012 RVM#41 Gary and Marian Hill 2001 Monaco Dynasty Jack 38' 370 hp ....If it ain't broke I can still fix it.
Like putting shoes on an octopuss, so are the days of our lives....
adamfolger is offline   Reply With Quote
Old 09-24-2016, 05:31 AM   #7
Winnebago Owner
 
Forza Tom's Avatar
 
Join Date: Sep 2015
Posts: 128
Quote:
Originally Posted by adamfolger View Post
Most coaches ( if not all ) the gen set overrides the ped power, so...?
Not in our 2007 Sightseer.

You had to plug the shore lime into the a plug coming off the generator. There wasn't a transfer switch. Much better system IMO.

There was a toggle switch in with the fuse box inside the coach that allowed you to toggle the rear AC unit either direct fro the gen set or to the shore power.

You could leave the shore power plugged into a power source and flip the switch and run the rear AC off the generator.

I liked that system much better that the current system.
__________________
Tom & Denise N
2016 Winnebago Forza 36G Freightliner XS-C, Cummins 340HP, 2011 Ford Edge
Uniontown, OH
Forza Tom is offline   Reply With Quote
Old 09-24-2016, 06:16 AM   #8
Winnebago Master
 
Join Date: Nov 2005
Posts: 1,079
Quote:
Originally Posted by rsn48 View Post
I don't understand why Winnebago would install two AC's that can only run off the generator if you wish to use both together, if you have the 30 amp shore system. Why not have a 50 Amp system to run whatever your motorhome has off of shore power?
Both air conditioners should be able to run on 30 amps unless they are failing and draw more power than intended. At the time your coach was manufactured (1994) I doubt there were any RV parks that had 50 amp services. Your coach came equipped with 2 13,500 btu air conditioners. A 50 amp service wasn't even an option in 1994.

The typical roof air starting current is about 15 to 16 amps. After startup it runs at approx. 10-12 amps. If you start one, let it come up to speed then start the other a minute or so later you should be drawing 20-24 amps. If you're drawing more than 20- 24 amps to power the AC's it's time to have them looked at.
__________________
Hikerdogs
2013 Adventurer 32H
Hikerdogs is offline   Reply With Quote
Old 09-25-2016, 03:36 AM   #9
Winnebago Owner
 
Triker56's Avatar
 
Join Date: Jun 2009
Posts: 107
Smile

Quote:
Originally Posted by Forza Tom View Post
Not in our 2007 Sightseer.

You had to plug the shore lime into the a plug coming off the generator. There wasn't a transfer switch. Much better system IMO.

There was a toggle switch in with the fuse box inside the coach that allowed you to toggle the rear AC unit either direct fro the gen set or to the shore power.

You could leave the shore power plugged into a power source and flip the switch and run the rear AC off the generator.

I liked that system much better that the current system.
I had a 1983 HR MH that was like that. I didn't know that some were still being built like that outdated system. You had to unplug the shore power and plug the same cord into the generator to get power.

That was not good when a storm came through the campground with heavy rain & wind rocking the MH. There were a few that their awning ended up on the roof or the ground.

And then campground lost power. Been there done that.
OH!! I had to go outside to do the switching in the downpour of rain. With a modern transfer switch I can sit inside and stay dry.

I'm glad to report my OEM transfer switch is still doing it's job after 18 years with no problem. But I do carry a spare if ever needed.

IMO the transfer switch is the best option.
__________________
99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
Triker56 is offline   Reply With Quote
Old 09-25-2016, 04:13 AM   #10
Winnebago Owner
 
vsheetz's Avatar
 
Join Date: Jun 2012
Location: SoCal
Posts: 227
Previous coach was a 2002 Fleetwood Pace Arrow 30a with two air conditioners and a EMS to manage the power. Worked well, no problems. Easier to handle the 30a cord, especially when cold and 50a cable can get stiff.
__________________
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 offline   Reply With Quote
Reply


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


Similar Threads
Thread Thread Starter Forum Replies Last Post
RV is 50 amps, RV Park Spot is 30 amps jmraz73 Plumbing | Systems and Fixtures 30 01-06-2014 05:12 PM
basement air. why don't all new rv's have it? Y Roadrunner General Maintenance and Repair 19 09-22-2013 06:02 AM
Have to use booster switch to start gen Why? doit2010 General Maintenance and Repair 13 05-26-2012 07:04 PM
Basement A/C & 15 Amps? Pubtym Electrical | Charging, Solar and Electronics 29 07-17-2007 07:34 AM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:16 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.