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10-21-2015, 10:27 PM
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#1
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Senior Member
Join Date: Jun 2015
Location: Where the wheels get parked
Posts: 678
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Dogbone usage
Will using a 50amp male to a 30 amp female harm the 30 amp TT or will it help with the infrequent usage of to many appliances?
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See you down the road. ;
Ken and Denise new SOB Imagine2019 2850mk 2017 Ram 2500 ctd.
previous 2015 shamrock23s,2015 Ram Eco diesel
previous 1997 coleman highlander pup,1994 35rb Vectra,diesel,2007 Fleetwood arcadia pup.2005 ram
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10-21-2015, 10:30 PM
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#2
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Senior Member
Join Date: Jun 2013
Posts: 10,833
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Hello,
I do it when able. The trailer is protected by a 30 amp main breaker. I find the 50 amp plug in better shape.
__________________
B and B
2022 Venture RV SportTrek STT 302 VRB Travel Trailer
2018 Heartland Landmark 365 Louisville 5th Wheel
2015 Heartland Bighorn 5th Wheel
2013 FR Rockwood 8289WS 5th Wheel
2012 FR Rockwood 2703 SS Travel Trailer
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10-22-2015, 06:46 AM
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#3
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Use the dog bone!
Normally in a big park with lots of units running there a/c you'll have low voltage on the 30 amp receptacle.
The 50 amp will normally have higher voltage.
In Nashville Tennessee this summer I was down to 102 - 103 volts .
I dogboned to the 50 amp receptacle and was back up to 112 volts.
TURBS
2008 duramax
2015 columbus 320RS
2015 camping "31 nights"
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10-23-2015, 02:15 PM
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#4
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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It really depends on the dog bone and the site wiring!
The standard 120/240 electrical service has two lines/legs at 120.
On a 30amp outlet you use only one of the 120 line/legs. When using the a 50amp outlet you have access to both 120 lines/legs.
The dog bone has a 50amp male plug, but only one of those are connected to the 30amp female end. Is your dog bone connected to the heavy loaded line/ legs or the light one?
If the electrical system is setup correctly they will alternate each site as to which line/ leg the 30amp receptacle is wired to in an effort to balance the load.
The plus side to using the 50amp is your cords will be a large gauge wire with less voltage drop and if you in a location that have infrequent motor coaches and/toy haulers then the 50 amp receptacle might be in better shape and not wasted.
Erik Lundquist
iPhone 6S using Tapatalk
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10-23-2015, 02:17 PM
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#5
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Not true in Nashville.
BombDoc next to me had 118 on one leg and 112 on the other of his 50 amp.
Doesn't make sense that my 30 was down to 102.
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10-23-2015, 02:52 PM
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#6
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Senior Member
Join Date: Jun 2013
Posts: 10,833
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Quote:
Originally Posted by TURBS
Not true in Nashville.
BombDoc next to me had 118 on one leg and 112 on the other of his 50 amp.
Doesn't make sense that my 30 was down to 102.
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Same voltmeter? Could be the southern one was reading higher because of latitude.
__________________
B and B
2022 Venture RV SportTrek STT 302 VRB Travel Trailer
2018 Heartland Landmark 365 Louisville 5th Wheel
2015 Heartland Bighorn 5th Wheel
2013 FR Rockwood 8289WS 5th Wheel
2012 FR Rockwood 2703 SS Travel Trailer
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10-23-2015, 02:52 PM
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#7
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by B and B
Same voltmeter? Could be the southern one was reading higher because of latitude.
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Lol.
We were going off of the progressive industries ems.
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10-26-2015, 12:39 PM
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#8
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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Dogbone usage
The load on each of the lines/ legs of the electrical service is extremely variable:
1. Are all the 30A outlets in the park connected to the same leg? This matters more if the majority of the RVs are currently using the 30A outlets as they could be all connected to the same line/ leg.
2. Do the 50A outlets in the park alternate the line/ leg connections? This would matter if all RV manufactures connected the typical loads to one of lines/ legs of a 50A. I see some report one leg is the standard loads and the second is just for the additional A/C units. Then most likely if the 30A is connected to the same line as the 50A MC next to you with a heavy load on that line you could see a voltage drop.
3. RVs with 50A connection might not have their loads on such they are equally distributed to each lines/ legs of the 50A.
Basically relate the 30A connection to one hose providing you power.
Think of the 50A connection as two hoses providing you power.
Think of each RV pedestal having two supply pipes which you have no idea which 30A connection is hooked to which pipe. You have no idea which 50A hose is connected to which supply pipe!
Think of your 30A to 50A dog bone as a hose with a wye connector on the 50A side that has a fix, unknown valve shut off, so only flows from the one 50A hose to the 30A hose.
Now RVs with 50A connections (2 hoses), how are they connected to appliances (all on one? Split evenly?), and how many things are on/ flowing in each line/ leg?
Too many variables to say outright the 50A to 30A DogBone equals better electrical service.
Now if you had two dog bones wired differently from each other, so you could switch which line/ leg you were connected that would be a Plus.
What would be the perfect solution? To have a 50A cord on the RV to the EMS and the EMS would constantly switch to the line/ leg that had the best power! Down side you would need to upgrade the cord set and have a 50A to 30A connector for those parks that only provide a 30A outlet.
Erik Lundquist
iPhone 6S using Tapatalk
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10-26-2015, 12:41 PM
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#9
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Now if you have a 50 to 2 30's dogbone you can hook to the line that's highest.
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10-26-2015, 12:42 PM
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#10
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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10-26-2015, 12:42 PM
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#11
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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Quote:
Originally Posted by TURBS
Now if you have a 50 to 2 30's dogbone you can hook to the line that's highest.
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Wow that would be the solution!
Erik Lundquist
iPhone 6S using Tapatalk
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10-26-2015, 12:44 PM
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#12
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Here it is.
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10-26-2015, 12:49 PM
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#13
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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That would be the best option to carry if you experience power issues while at a site.
That the one I will be buying for my new 23IKSS after I install the EMS.
Erik Lundquist
iPhone 6S using Tapatalk
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10-26-2015, 12:50 PM
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#14
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by elundquist
That would be the best option to carry if you experience power issues while at a site.
That the one I will be buying for my new 23IKSS after I install the EMS.
Erik Lundquist
iPhone 6S using Tapatalk
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Unfortunately I just had one.
Sold it this weekend to Wolfe whistle
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10-26-2015, 12:53 PM
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#15
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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Now if the RV site wiring is really weak you could be chasing which one to plug into as A/C units cycle on/off or as people come and go in the park.
Erik Lundquist
iPhone 6S using Tapatalk
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10-26-2015, 12:54 PM
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#16
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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True enough!
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10-26-2015, 01:02 PM
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#17
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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I have not added a EMS yet to the Popup, so I am not sure what type of power conditions we have had. I wish I thought about it more before I bought my 50A to 30A dog bone. I guess I will sell it with the Popup.
Good thing the only real load I have on the Popup that would be hurt by low voltage is the A/C unit.
I guess if I install the EMS on our new 23IKSS I will need to have a 50A to 2x 30A pigtail/ splitter. [emoji3]
Erik Lundquist
iPhone 6S using Tapatalk
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10-26-2015, 01:10 PM
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#18
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Future Roo 23IKSS Owner
Join Date: Feb 2015
Location: Gypsum, CO
Posts: 189
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The ultimate solution would be to have the EMS switch between the two lines/ legs automatically. Then have a 50A cord on the camper with swappable plug heads on the end of the cord.
If you only had a 20A or 30A connection the EMS would only see voltage on the one line/ leg and would only use that line/ leg.
When at a site with a 50A outlet you would install the 50A plug on the cord and the EMS would do its magic automatically!
Sounds like a good money maker.
Erik Lundquist
iPhone 6S using Tapatalk
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