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03-11-2016, 08:59 PM
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#1
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Junior Member
Join Date: Feb 2014
Posts: 29
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50 to 15 amp
I would like to know if there is a safe way to step down the 50 amp connection on my Rockwood ultralight to 110v connection. I would like to run the fridge at the house for a day or so before camping and don't have a 50 or 30 amp connection to plug into.
Anybody done this?
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03-11-2016, 09:02 PM
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#2
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Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
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Perhaps this.
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2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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03-11-2016, 09:05 PM
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#3
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Senior Member
Join Date: Jun 2013
Location: London, Kentucky
Posts: 630
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My refer is plugged into a 110v outlet behind the outside panel that the drain exits. I would say you could take off the panel and plug the refer into an extension cord.
About a 5 minute job.
Travel safe
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2019 Ford F-350 Super Duty CC Dually 6.7 Diesel
2011 Cedar Creek 36CKTS Touring Edition
I Catch Fish......What is your SuperPower?
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03-11-2016, 09:07 PM
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#4
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Senior Member
Join Date: Jul 2012
Location: Moundsville Wv
Posts: 1,504
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That's what we do at the house 50 amp to 30 amp to 110 a day before we leave, DW bought a 50 to 110 this winter but havnt tried it yet, camping world online has them.
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2003 Duramax
2010 Blue Ridge
1 DW
1 mutt
on occasion 1 DD
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03-11-2016, 09:11 PM
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#5
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Junior Member
Join Date: Feb 2014
Posts: 29
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Quote:
Originally Posted by Ford Idaho
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Thanks Ford, this looks like just what I need!
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03-11-2016, 09:15 PM
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#6
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Junior Member
Join Date: Feb 2014
Posts: 29
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Yeah, that's what I am doing now. Just wondered what was out there to provide power to fridge and the converter to keep battery up, use lights, etc. I know I can't run everything but wondered what options were there.
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03-11-2016, 09:16 PM
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#7
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Senior Member
Join Date: Oct 2014
Location: Southeast PA
Posts: 274
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I have this. even better than the other one posted as I now don't have to drag the 50A cord out at all. Install adapter, plug in 15A cord. 50A cord stays stowed in the trailer.
http://www.amazon.com/dp/B002IZJD5S/...50+amp+adapter
Kind of salty, but not having to deal with the 50A cord at home is worth it.
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2013 F350 dually
2015 Palomino Puma 351THSS Premier Edition
2015 Nights camped 15
2016 Nights camped 5
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03-11-2016, 09:21 PM
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#8
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Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
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This is what I do.
Nice heavy duty cord from Lowes with an adapter from Walmart.
Just pull the plug out of it's hole and plug the smaller cord to the trailer and into the garage.
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2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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03-11-2016, 09:28 PM
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#9
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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It has not cost a fortune to have an electrician put in a 30 (and now will have to be changed to 50) power outlet on side of garage, on a dedicated circuit, with a weatherproof box. Solves all future problems when parked in the driveway at home.
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03-11-2016, 09:43 PM
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#10
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Georgia Rally Coordinator
Join Date: Jun 2015
Location: GA
Posts: 24,488
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I have 30 amp at side of house but I drop my tt from 50 to 30 to 110 so it stays plugged in all the time. Can have 30 to run air if need be. Later RJD
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2020 Shasta Phoenix SPF 27RKSS (sold)
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Traded 2015 30WRLIKS V-Lite
Days camped 2019 62
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03-12-2016, 05:13 AM
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#11
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,954
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Quote:
Originally Posted by themounties
That's what we do at the house 50 amp to 30 amp to 110 a day before we leave, DW bought a 50 to 110 this winter but havnt tried it yet, camping world online has them.
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Quote:
Originally Posted by aceinspp
I have 30 amp at side of house but I drop my tt from 50 to 30 to 110 so it stays plugged in all the time. Can have 30 to run air if need be. Later RJD
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I know it's just kinda a terminology thing, but as far as a RV is concerned you are going from a 120/240 volt split phase 50 amp, to a 120 volt 30 amp, to a 120 volt 15 amp.
Your RV utilizes 120 volts on any of the three connections. You only are changing the total amps available via the 120 volt connection. 100 amps total to 30 amps total to 15 amps total.
These links may better help everyone understand this:
AC Electricity
Electrical Tutorial - Chapter 3 - 30 Amp versus 50 Amp
RV Electric
The real reason I point this out, is it's best for those reading this to fully understand just what a 4-wire 120/240 volt 50 amp split phase service is, as well as a 3-wire 120 volt 30 amp. We have had MANY a horror story on these forums where a professional electrician has wired up someones home outlet as a 240 volt 30 amp service, thus burning up items in the RV when the member plugged in. The 3 wire TT30 RV plug confuses even the professionals who may not have previous experience to know it is ONLY 120 volts. This is why we keep the following pdf file here on the forums, for our members to always print out and give the electricians. If we save just one member from this RV catastrophe, it's worth all the typing.
http://www.forestriverforums.com/for...let-27223.html
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2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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03-12-2016, 05:19 AM
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#12
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Senior Member
Join Date: Apr 2015
Location: central arizona
Posts: 191
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glad you chimed in.......whats with this 50 amp to 30 amp to 110v....... guess no base knowledge.
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2008 F250 6.4 diesel with 50 gal aux tank towing a 2015 Rockwood 2109s Minilite.
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03-12-2016, 05:50 AM
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#13
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,954
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Quote:
Originally Posted by deebarjay
glad you chimed in.......whats with this 50 amp to 30 amp to 110v....... guess no base knowledge.
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If you are referring to my above post, the links provided explain it well.
I really like this link below (and is also above). Click on all the left hand tabs on the page to peruse the different things. The 'campground service' tab has all the different electrical configurations you will encounter.
Also check out the "outlet testing" tab which explains how to test outlets, which everyone without a EMS system should be doing EACH and EVERY time before they plug in.
RV Electric
Hijack over
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2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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03-12-2016, 08:31 AM
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#14
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Junior Member
Join Date: Feb 2014
Posts: 29
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Thanks again! Great info on electrical. I'm a bit of a techie and really enjoy reading this stuff.
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03-12-2016, 09:02 AM
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#15
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Georgia Rally Coordinator
Join Date: Jun 2015
Location: GA
Posts: 24,488
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Thanks for that link. Good stuff. Later RJD
__________________
2020 Shasta Phoenix SPF 27RKSS (sold)
2018 Dodge Ram 2500 6.4 3:73 gearing.(sold) (sold) 2015 Chevy 2500 6.0, 4:10
Traded 2015 30WRLIKS V-Lite
Days camped 2019 62
Days camped 2020 49 days camped 2021-74 2022-40 days 2023 5 days
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03-12-2016, 09:26 AM
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#16
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,954
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Quote:
Originally Posted by jimex
Thanks again! Great info on electrical. I'm a bit of a techie and really enjoy reading this stuff.
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And thank you for allowing me a semi-hijack on your thread.
It's just important that those reading, know that the 30 amp RV outlet is ONLY 120 volt and has three wires, a hot, a neutral, and a ground.
It's when electricians (or homeowners) mistakingly believe that the 30 amp RV outlet is 240 volts, that bad things happen. They wire it with TWO hots (each at 120 volts), and usually a ground. Usually NO neutral is connected.
This is when you burn up things. You will also burn up a 50 amp RV connecting to a miswired 3-wire outlet, using an adapter...since the adapter shares the 240 volts across both legs in a 50 amp RV (which normally only has 120 volt per leg)
Looking at the schematic below for how outlets are properly wired, and even using an adapter on a 50 amp RV..... you will notice that the TT30 outlet has a L1(120 volt hot), a neutral, and a ground.
Now imagine that the neutral has been replaced with the L2(another 120 volt hot). This is what many electricians do, when they miswire the outlet using an also incorrect double pole breaker....and therefore you have 240 volts feeding the RV. Bad stuff.
Even though a 50 amp RV has two 120 volt hot legs (L1 and L2) feeding it, the RV's inside electrical distribution panel utilizes each leg separate, so that everything is STILL only 120 volts.......but you have two 120 volt legs each capable of providing 50 amps of power per leg, or 100 amps total.
So in conclusion, whether you use a 120/240 volt split phase 50 amp outlet, a 120 volt 30 amp outlet, or a 120 volt 15 amp outlet.....you are most always going to be using 120 volts only.
__________________
2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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03-12-2016, 10:07 AM
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#17
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,954
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Jimex, I also should have pointed out something you may find useful in the above schematic.
If you will notice, they have on the far right, how a 50 amp RV utilizes an adapter, when adapting to a 30 amp outlet...or even a 15 amp outlet is the same.
Since it was explained that the 50 amp RV utilizes two separate 120 volt hot lines (L1 and L2), when you use an adapter to plug into an outlet that only has one hot line (L1), then the adapter "jumps" the one L1 over onto the RV's second L2 side.
So this way, you have the one and only L1, providing power to both the L1 and L2 sides of a 50 amp RV....so everything has 120 volt power going to it, but you are still going to be limited to only 30 or perhaps 15 amps total power when using the adapter.
Is it clear as mud now? LOL
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2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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03-12-2016, 10:16 AM
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#18
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Senior Member
Join Date: Jan 2015
Location: central valley, california
Posts: 498
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as far as the problem with using the 50 amp service or power, there will be none if your limit your usage to the 20 or 30 amp connector, the only time you need to worry is if you exceed the amperage of your smallest connector, or wire, so if you use a 20 amp connector reduced down from a 50 amp cord on your trailer or coach, be wise and only use what you chose to adapt to, if that makes since
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2014 COACHMEN PURSUIT 27 KB
Modesto, Central California
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