30 Amp RV vs 50 Amp RV



What is the difference between a 30 amp and a 50 amp RV electrical system? In this RV how-to video Mark Polk, with RV Education 101, explains why you can use more electricity in an RV with a 50 amp service then you can in an RV with a 30 amp service.
Click on this link to watch the educational “RV Living on 30 Amps” video:
https://youtu.be/bXiQhZkurL0

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41 thoughts on “30 Amp RV vs 50 Amp RV

  • July 28, 2020 at 7:59 pm
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    No wonder my two units don’t work at the same time, I had an adapter from 30 amp to 50 amp so why do they put to units on my motorhome if we can use both at the same time 🤔

    Reply
  • July 28, 2020 at 7:59 pm
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    I am a degreed (Department of Labor), IBEW, union electrician from Cook County, llinois – Local #134.

    I "stumbled" accross your video when trying to help a friend who has electrical problems with his RV.

    I must sincerely commend you. Many non- electricians "pretend" to know the real truths of the trade, when of course, they do not.

    You took an interesting 'nitch' of people, RV owners, (I myself do not own an RV), and accurately, and simply explained basic electrical concepts in a way easy to be understood.

    You are to be commended sir . . .

    Reply
  • July 28, 2020 at 7:59 pm
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    This is tricky because I’m putting a 50 amp (120 voltAC) inverter/charger in a old Motorhome with 30 amp wiring. I’m taking out the 28 year old 30 amp converter and replacing it with a panel wired for 50 amp AC split phase service to power the inverter/charger. This is not because I will be running two air conditioners or a lot of big loads. It’s because the battery charger part of the inverter/charger is a additional 20 amps AC and sometimes I may want to rapid charge my Lithium batteries at 130 amps DC.
    But I’ll actually only have 45 amp service because I’ll use a Combiner Adapter to combine a 15 amp outlet and a 30 amp outlet so that my power is all in phase for the inverter charger. I’ll just need to adjust the inverter/charger to draw only 45 amps rather than the full 50 amps it’s capable of. This may be a lot of wiring for nothing as I boondock mostly and don’t have more than my solar and little 2000 watt generator can provide. But I may need it sometimes.

    Reply
  • July 28, 2020 at 7:59 pm
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    Thank you. I have looked at countless sources that can't seem to explain what you said in less than 5 minutes. You da man!

    Reply
  • July 28, 2020 at 7:59 pm
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    In Australia we use 240 volts 50 hz 10 amp switched wall plug and 15 amp. The 15 amp is the lowest for heavy use and goes up to 50 amp ? . RVs, travel trailers, vendors use 15 amp for everything. power tools have a 15 amp 240 volt 3 pin plug. Our 3 phase is 415 amp 50 hz.

    Reply
  • July 28, 2020 at 7:59 pm
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    Thank you for this,just purchased an RV and they sold me a 50 amp plug and adapter for the 30 amp plug. Thanks to this I’ll be bringing the 50amp and adapter plug back for a 30 amp surge protector.

    Reply
  • July 28, 2020 at 7:59 pm
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    If you have 50amp RV and use a 30amp to 50amp dogbone because RV park only has 30amp service…will the panel inside your RV feed both Main Breakers since you need 2 hot legs? As far as I know 30amp service only has 1 hot leg, so does this Dog bone split that 1 Hot leg coming from 30 amp RV service into 2 hot legs that plug into the RV?

    Reply
  • July 28, 2020 at 7:59 pm
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    I live on a lot with 2 other rv'ers. 2 of us have 30amp and the other has 50 amp. Is it right that we split the hydro in 1/3's? If not how should it be split or should I tell them they have to put the 30amp plug on their rv?

    Reply
  • July 28, 2020 at 7:59 pm
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    Why does the USA & CANADA use 110 volt &240 volt instead of straight 220/240 volt like most of the world. It will be easier.

    Reply
  • July 28, 2020 at 7:59 pm
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    I disagree with using a 30 amp to 50 amp adapter you'll only get 3600W. You will get 50 amps (6000W) since the each hot leg of the 50 amp service is wired with a 50 amp circuit breaker. All the adapter does is drop a hot leg. Not sure if it matters. A dedicated 30 amp RV can only use 30 amps since the main breaker inside an RV is wired for 30 amps maximum (unless you swap it out with a larger circuit breaker).

    Reply
  • July 28, 2020 at 7:59 pm
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    okay let's just see what you really do know ,on RV there's black and there's white which is positive and which is negative.

    Reply
  • July 28, 2020 at 7:59 pm
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    The RV internal main 30A breaker would probably trip if total internal load exceeds 30A even when plugged in to a 50A line. So 30A is single phase between hot and neutral with ground. Since the 50A is two phases @ 240in between and 120 to neutral and ground then the adapter to 30A must be using only one phase out of the two. I will ring it to confirm. One must be disconnected internally. At this point if that is what happens I wonder about phase balance from the 50A external service line. If ten 30A RVs plug in at the 50A connector with an adapter and all use only the same one leg off of the 240 it could create a balancing problem in the service line. Interesting. Thanks for the video. I will have to check now.

    Reply
  • July 28, 2020 at 7:59 pm
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    I wish I had the 50 amp in my travel trailer, 30 Amps just is not enough for most people.

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  • July 28, 2020 at 7:59 pm
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    I notice that 3 things 30 amp plug years ago in State park ..where they make u paid same price even if u are tent camping .. I found a old 3 thing plug and wire and then connect a couple of 110 plug box… So now tent camping I got electricity for tv,VCR ,light small heater or what ever …HA ha nothing like roughing it ..lol

    Reply
  • July 28, 2020 at 7:59 pm
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    I Mark I have question: if my generator only have connection for 30 amps plus two standard connections how can i run my 50 amp RV?

    Reply
  • July 28, 2020 at 7:59 pm
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    Comment & a question. So if you use an adapter to plug in a trailer that has a 30A plug into a 50A receptacle then any electrical draw above 3600 watts would trip the main breaker in the trailer. However if by some bizarre chance the main (30A) breaker should fail then being plugged into 50A receptacle would then pose a danger. Normally the 30A breaker on the pedestal is your backup in case your main 30A breaker fails.

    Question: When you plug an RV that has a 50A plug into a 30A pedestal (using a dog bone adapter) are both 50A legs receiving electricity or is just one of the 50A legs receiving electricity?

    Reply
  • July 28, 2020 at 7:59 pm
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    We just got our new RV and are learning as we go. Loving your videos!

    Reply

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