Good Sam Club Open Roads Forum: 50 to 30 to 15 amps
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 > 50 to 30 to 15 amps

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Timothy2001

Texas and NY

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Posted: 06/25/19 05:46am Link  |  Quote  |  Print  |  Notify Moderator

Was at Camping World recently where I saw a travel trailer on their showroom with what looked like its 50 amp cord, with a reducer to 30 amps and another reducer that was then plugged into a regular wall outlet.

We'll be moving from our home soon so I do not want to install a 50 amp breaker and associated receptacle so is there anything wrong with using a similar set up? I realize I will need to limit the load to under 15 amps but that should keep a trickle charge on the batteries. I am not running the A/C or really anything else except the DC controls and the fridge (running on propane).


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midnightsadie

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Posted: 06/25/19 05:49am Link  |  Quote  |  Print  |  Notify Moderator

my rv sits in a bldg plugged into a 20amp 120v outlet . I can run everything but not all at one time, no problem. I use the pig tail 30amp to 120v plug

RobWNY

Jamestown, NY

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Posted: 06/25/19 05:54am Link  |  Quote  |  Print  |  Notify Moderator

I have a 50A to 15A Dogbone. You don't need two reducers. This is what I use. Your setup might be different but I'm sure you can find the right reducer for your rig. Click Here

Bill.Satellite

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Posted: 06/25/19 05:59am Link  |  Quote  |  Print  |  Notify Moderator

That's why they make those various adapters. It's perfectly fine to use them. However, I would not recommend adding any additional standard extension cords when using 15/20 amp circuit. If you do need to run longer to reach a plug keep the extension cord as large as possible (30 amp extension cord if possible) or us a heavy duty cord that is as short as possible.
You just have to be aware of what is and what is not running in the RV. There are a number of parasitic loads so a bit of experimenting might be necessary. I have plugged my Prevost bus conversion into a 15 amp circuit to keep the residential fridge running. I just have to turn most everything else off.


What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?

RoyB

King George, VA

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Posted: 06/25/19 06:26am Link  |  Quote  |  Print  |  Notify Moderator

Got to carry the various adapters with you on the camping trips... Many of trips with my 30A shore power cable I find the pedestal has burn and melted parts on it so no way will I plug into that. I will use the 50A to 30A adapter and plug my popup into that... It is safe to do as it only taps into one side of the hot wires... I also carry a HD regular extension cord and like to also plug into the pedestal 20A service to run my space heater or things on the outside when needed...

I call these PLAN-B items...

What you saw at a camp store might be the way that person is storing them too... Just plug them all together to keep track of them...

I don't care much for the small plastic adapters you see a lot of - they would always get hot for me when being used. I like the dog bone long cord type of adapters...

I also always have a multimeter along on my my trips and like to walk around the 30A and 50A pedestals and make sure they have the correct AC Voltages where it should be...

A good place to look at these thing is NOSHOCKZONE on-line... Lots of good info there...

50A Side
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30A Side
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Be very careful wiring up your house for the 30A and 50A pedestal connections. They are slightly different than regular house wiring... A mistake here will get very expensive for you when you first plug in... Lots of blue smoke...

Even when you have a professional do it can be dangerous. They too should be mindful this is for an RV Circuit. The savings grace with using professional electricians is they have Insurance to cover the blue smoke mistakes. If you do it yourself guess who pays for all of that haha...

Just saying...

Roy Ken
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mike brez

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Posted: 06/25/19 06:35am Link  |  Quote  |  Print  |  Notify Moderator

I have been running off a 120 outlet using my 50amp cord for 5 years and ran my other rvs for 20 years the same way put either a 30amp cord to 120.
I finally tapped into my panel and ran a 50 to the rv. I gab a breaker laying around went to Home Depot and picked up some wire and a box.


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wa8yxm

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Posted: 06/25/19 07:23am Link  |  Quote  |  Print  |  Notify Moderator

Ok all you got to do is remember the rules according to Reddy Killowatt

50 amps.. All the electricty your RV can eat (Usually)

30 amps. ONLY ONE air conditioner and ONE other "Big ticket" (and sometimes not even that) Big Ticket is Microwave or Water heater or space heater (See note below)

20 amps.. ONE a/C OR one big ticket item but not both if RC i only item on circuit

15 Amps. if the batteries are full up you MIGHT get one A/C to work but iffy. or one big ticket.

NOTES

15 amp outlet two paralll blades 20 the neutral is turned 90 degrees. The more common 15/20 (Takes either plug) the Neutral is "T" shaped.

Space heaters: I have special 15/20 amp circuits for mine the standard RV wiring may or may not take the load. I had one failure. others have had worse.


Home is where I park it.
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DrewE

Vermont

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Posted: 06/25/19 08:05am Link  |  Quote  |  Print  |  Notify Moderator

RoyB wrote:


Be very careful wiring up your house for the 30A and 50A pedestal connections. They are slightly different than regular house wiring... A mistake here will get very expensive for you when you first plug in... Lots of blue smoke...

Even when you have a professional do it can be dangerous. They too should be mindful this is for an RV Circuit. The savings grace with using professional electricians is they have Insurance to cover the blue smoke mistakes. If you do it yourself guess who pays for all of that haha...


The 30A RV receptacle is indeed unique, and is the one that sometimes gets miswired with disastrous results. It looks vaguely like the (older) 3 wire 30A 240V electric dryer receptacles that are quite common, but is not the same thing and is a 120V connection.

The 50A RV receptacle is absolutely identical to a (newer) four wire electric range receptacle, and any electrician with any experience at all should be able to properly wire it in their sleep. You could unplug your kitchen range and plug your RV in, if it isn't a three wire range connection; or, I suppose, bring a range to a campground and plug it in there. People may think you a bit odd, but what's the fun in being boringly normal?





time2roll

Southern California

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Posted: 06/25/19 08:49am Link  |  Quote  |  Print  |  Notify Moderator

No issues as described.


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pianotuna

Regina, SK, Canada

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Posted: 06/25/19 09:43am Link  |  Quote  |  Print  |  Notify Moderator

Best practise would be a 15 male to 50 female. You may wish to have a 30 to 50. Dogbone adapters are preferred.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

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