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03-18-2014, 09:46 AM
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#1
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Junior Member
Join Date: Mar 2014
Posts: 4
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Shore charging 50A coach with 15 or 20 amp 120
I just bought a 2014 Expedition and will be storing it. I have been working on outfitting it in my driveway and with the Energy Management System I have been trying to plug into 120 to just charge the batteries which I should be able to do. I have set the Magnum Energy to 15A limiting and turned off heavy draw breakers, like reefer and A/C units but I still can't get it to accept the power all the time. It shows L1 0 volts and L2 118 v. Do I need voltage on both lines like 50amp service requires 120 on both hot leads 180 out of phase. How do I shore battery charge without 50Amp service? Running generator not neighborly all the time. Or should I just charge while traveling and use battery disconnects when stored? Any suggestions or experience from other Fleetwood 50A owners appreciated.
Doug Stroud
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03-18-2014, 10:07 AM
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#2
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Senior Member
Join Date: Jul 2012
Location: North Maryland
Posts: 464
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Sounds like your adapter may be the problem. I believe what you need is called a "dogbone" adapter. It adapts 30 amp to 50 amp and gives 120v on both legs. You can then adapt the 30 amp to your 20 amp. I do it all of the time at home. I ca even run one A/C unit with no problems. Make sure your extension cord is a good one or it will get hot.
__________________
Getting there is half the fun - take your time and enjoy the scenery.
2012 Thor Outlaw
2000 Heritage Softail
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03-19-2014, 08:52 AM
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#3
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Junior Member
Join Date: Mar 2014
Posts: 4
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Fleetwood Power
Thanks Cobra. I think I have dog bone plugs, I use a 50-30 then a 30 to 110. Maybe the 30 to 110 is mis-wired or my neutral is on wrong plug on the house line. Getting 50 amp installed at house next week so will be solved then. Thanks for the response. Good travels to you.
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03-19-2014, 08:47 PM
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#4
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Senior Member
Join Date: Sep 2010
Location: MI
Posts: 1,091
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As an aside, don't put the connected adaptors in the mh bay. They can get really hot, even enough to start a fire. Eventually spend the money on a real 220v 50 amp plug. You will not regret it. It only cost us about $400. The wire was the most expensive part. If you know how to do it is not that difficult.
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03-20-2014, 09:21 AM
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#5
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Yes you need voltage on both L-1 and L-2. You have two choices
One, is a dogbone adapter 15 amp plug 50 amp outlet
The other is two dog bones 50-30 and 30-15 (The second number is the plug)
You need a 50-30 anyway.
THIRD CHOICE on SOME RV's (And as it happens this works for me)
On some RV's the converter is a plug in model (Mine for eample) and I have a cord that has a 15 amp plug and a 15/20 amp outlet, since the 10 amp max load converter has a 20 amp plug on it.
So i pull the plug from the RV's outlet and plug into the cord to the hole in the building wall. Works great, and completly limits my power draw to that which the converter sucks (not much) when I need 120vac indoors (TV's and such) well.. that is what the Prosine does best. I mean the Prosine is even better at it than Consolidated Edison Duke, Blue ridge, Detroit Edison, Comsumers and the other power companies about the land.
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Home is where I park it!
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03-20-2014, 09:38 AM
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#6
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Senior Member
Fleetwood Owners Club
Join Date: May 2011
Location: Southwest
Posts: 1,549
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On our 2012 Discovery, we are connected from 120 VAC to the dog bone converter to the 50 A line on the coach. Our power meter shows L1 at 0 VAC, and L2 at 120 VAC. I spoke to Fleetwood and the dealer about it, and it's "normal" they say. We've never had a problem with running the battery charger and the refrigerator over the winter with this configuration.
__________________
Joe and Debbie, Emma the Aussie Cattle Dog who adopted us
2012 Discovery 36J, Blue Ox and Air Force One, 2010 GMC Acadia Toad
USAF (Ret) WDØM https://wd0m.com
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03-21-2014, 02:00 AM
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#7
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Senior Member
Join Date: Apr 2012
Posts: 1,414
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Quote:
Originally Posted by Cobra1
Sounds like your adapter may be the problem. I believe what you need is called a "dogbone" adapter. It adapts 30 amp to 50 amp and gives 120v on both legs. You can then adapt the 30 amp to your 20 amp. I do it all of the time at home. I ca even run one A/C unit with no problems. Make sure your extension cord is a good one or it will get hot.
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Hey cobra, I need to disagree with you. The adaptor does not combine the 110v to both 110v legs of the 50 amp curcuit. That is the job of the switcher. Mine uses an intellitec unit to "split" the single leg of 110v to all curcuits in the MH. On my surge protector panel it shows 110 leg 1 and 0 leg 2 when plugged into 15,20,30 amp service.
__________________
Dave and Laura & two cats
02 Discovery with Accord toad
retired auto rv tech and teacher, wife rt nurse
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03-21-2014, 02:03 AM
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#8
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Senior Member
Join Date: Apr 2012
Posts: 1,414
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Doug, will you be parking your MH in the driveway enough to warrent a 50 amp panel installed in or on your garage? I played with the 15amp adapter untell I burnt one trying to charge batterys then installed the 50 amp box. Now I can run a/c, ref, micro and all other loads
__________________
Dave and Laura & two cats
02 Discovery with Accord toad
retired auto rv tech and teacher, wife rt nurse
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03-21-2014, 05:38 AM
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#9
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Senior Member
Join Date: May 2010
Posts: 278
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Make sure your hot water heater is off, or switched to propane.
Common problem when we first got our coach.
I stayed plugged into a 15a circuit when ever it was parked in the driveway.
Jim
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03-21-2014, 08:51 AM
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#10
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Senior Member
Join Date: Jul 2012
Location: North Maryland
Posts: 464
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Quote:
Originally Posted by stink
Doug, will you be parking your MH in the driveway enough to warrent a 50 amp panel installed in or on your garage? I played with the 15amp adapter untell I burnt one trying to charge batterys then installed the 50 amp box. Now I can run a/c, ref, micro and all other loads 
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The best way by far is a 50 amp circuit. I may have to invest someday.
__________________
Getting there is half the fun - take your time and enjoy the scenery.
2012 Thor Outlaw
2000 Heritage Softail
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03-24-2014, 09:15 AM
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#11
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Junior Member
Join Date: Mar 2014
Posts: 4
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All okay now.
Thanks to all the good comments and all true. If the dealer had not turned off the inverter switch after a small warranty repair and then not turn it back on (the big red one I did not check) it would have been okay. All good now. Putting in 50 amp RV service at my house Friday and just finished first trip with the rig and all was perfect.
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