RV 30A and 50A Shorepower Explained.
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- Опубліковано 4 жов 2024
- This video is a primmer for the understanding of RV Shorepower systems. However, as a disclaimer, this should be considered amateur opinion.
Questions answered are;
is 50A service 120V or 240V?
How do I explain to an electrician how to wire a RV outlet for my Home.
Caution: This video teaches concepts only. Refer any wiring tasks to a qualified electrician.
Copyright www.RV-Project.Com
The best explanation I have ever heard. Great job. Don’t forget to give Nikola Tesla his credit since Edison was opposed to AC power but could never get dc power to work over long distance.
Tesla was a genius that was treated horribly during his lifetime.
I work in the electric industry and this has to be the best explanation of how 240/120v comes from a transformer I've ever seen. Well done.
Thank you for your input.
You make a good teacher. Great video. From a n ole retired electrician.
Thank you for supporting the channel.
Thank You for explaining it. I am a retired HVAC tech with a lot of experience. I am looking to downsize from my manufactured home to a "Park Model " that comes with a 50AMP hook up. It comes with a Mini- Heat pump /AC and an electric water heater. I want to add some Hydro-sil baseboard heaters but I wasn;t sure I would have the 230 V necessary. When the digital FLUKE meters came out, I went out and bought my own. The company I worked for provided us the little analog meters that will kill you, especially if your working 3 phase. I am 77 now and still have that fluke I bought in 1970. The worst service call to diagnose was when for some reason the neutral leg had an open circuit. My daughter now lives/works/travels in her Thor Tallero 20J and I had to teach her about all the different plugs. I also installed a 30 AMP plug alongside my garage so she can hook up when visiting. Cap'n Rick, Port of Lewes, Delaware
Yours has become my go-to channel for all things related to RV electrical. Thank you!
Wow, thanks!
Liked & subscribed!
Your calm, clear presentation style reminds me of one of the best teachers I ever had in school. And the diagrams & circuit examples really clarify what you are explaining. (I recommend that people having trouble following the video rewind to a diagram, study it & print it if necessary, then resume the video for the detailed explanation. Keep doing it until you understand it, then proceed to the next segment.)
Miss you and your videos! Glad I am able to revisit them!
I am glad to see a good explanation of the 50a RV plug. There is as much misinformation on this as there is on RV tires. Everybody is an expert. Another one is think that you must have a 50a at your house, when maybe a 30a will suffice at home.
Thank you for supporting the channel.
Fantastic overview. Thank you. It was much easier to share this video than to try and describe this to my friend.
Still amazes me how many people get this wrong. Doesn't help that RV manufacturers are also getting it wrong. Leads me to believe there are no engineers working at the RV plants.
Very informative video. I had my 50A service installed and thought I knew a lot about it but turns out, not so much. Great video.
Glad it helped
Exactly the type of video I was looking for.
It's amazing the amount of mis-information out there on this topic.
I now understand what the neutral wire is, thanks.
Thank you for supporting the channel.
Thank you. Now I understand 50 amp service.
Glad to help
Best video ever !! Very good teacher, I D'like to talk to you over the phone I got some questions about a little problem I went trought.
Thank you for that very clear and well presented explanation!
Glad it was helpful!
Trying to install a 50 amp service for my RV. I was with you until you showed your breaker panel and at the end you said you had the two breakers dedicated to the RV circuit with legs down to other breakers sharing 120 volts. Now I am more confused than when I started. Electrical work is not in my wheelhouse, so its not your fault.
great job on this subject............
The stupid owners manual for mine calls it 50 amp 120v. I kept thinking that this cannot be right. Thanks for the confirmation.
My owner's manual is the same. There is so much mis-information about this.
Excellent information, thank you.
Glad it was helpful!
Best explanation !!!
You did a very nice job keep up the good hard work
Thanks.
Excellent video. Great explanation, I’m subscribing!
Thanks and welcome
I suspect only 20% or so of the bigger RVs need 50 amp service and thus most folks should be fine with the 30 amp setup. If you want to future proof your setup, spending $200 or so now for the heavier wiring and larger CBs is probably a decent way to go.
Very well done. Thank you.
Glad you liked it!
Having a 50 amp plug with two legs gives you 110 volt 50 amp on each of the two hot legs, correct? Assuming you do not have any device in the RV that would require 220 volt, does it make a difference whether you have the outlet wired as 220 volt split phase or 110 volt? I guess you really are getting in both cases 100 amp at 110 volt? Could there be a difference in the sense what the load is on the Neutral? Would Neutral get 50 amps through it at 220 volt in the split phase scenario but would get 100 amps in the 110 volt (2 x 50 amps)? Might make a difference what wire size you need for Neutral?
Outstanding!
You should always carry 50A to 30A & a 30A to 20A adapters.
Always use the highest amp service wherever you camp.
!
Great video
Thanks!
Excellent video! Can you please explain how a TT-30 plug to 14-50 receptacle adapter works? Does it connect L1 and L2 inside the RV together? How do 240V appliances in the RV react to that?
Generally the TT-30 to 14-50 dogbones simply parallel L1 and L2. Since most RVs do not use any 240VAC appliances, the breaker panel is wired for two legs of 120VAC, just like your house, without an available 240VAC branch connection.
For the few $2million custom high-end RVs that do use 240VAC for clothes driers and such, then you could obviously not use a TT-30 dogbone and would have to stay on 50A service.
I own a 30amp RV. I'm looking into installing an electric tankless water heater. Is it possible to upgrade my rig to a 50 amp system and use one of the legs for the water heater alone and the other leg to the rest of the RV?
I have a 2008 FEMA trailer and it seems to have 3 live circuits on it. How can that be? I assumed it would only have 2 circuits 15 amps each? I'm on 30 amp park power. I'm probably missing something. I try to run 2 small space heaters on the same "line" and it trips the breaker for that line
Plus also one thing to add it’s not three pole four wire it’s a two pole for wire. We call it polls because that is the gang of breakers that are connected together in the panel so they two pole 50 amp or pole 30 amp are only considered two polesof three pole and our language would be three phase and these are not three phase
Being first is not always the best, much of the rest of the world was able to skip 120v split phase and just go with 220v ... more efficient use of copper etc. USA was early adopter and too late to change infrastructure. I guess to keep it simple presenter did not show the actual phase waveform (peaks) , that's also a useful and more true explanation.
Si basically I just tell my electrician to install a 50amp 240v plug in post and the rv will split it into 120 inside right
Love your video! I can’t figure out how the neutral can handle both legs? Let’s say you run the 50 amp service as talked about but instead of 50 amp plug, you run two 30 amp RV plugs (one from each leg) but each leg uses the neutral which is the same size as each leg? If all the wires are the same size, how does the neutral handle return from two legs without melting? If two campers were running at 30amps from each leg, doesn’t that put 60amps on the one neutral wire? Is that ok to do?
It all depends on how the shorepower pedestal is wired.
In an individual pedestal, the 240VAC circuit would likely be split into two 30A circuits using L1 and L2, which would maintain the differential current on the neutral.
However, if the same leg L1 or L2 were used for each side of the 30A adapter, especially if the shorepower pedestal services more than one site, then potentially there would be the chance for 60A on the neutral, however unlikely that would be. And for that reason, I do not like the 30A adapters.
Not to get too nit-pickey, your drawing for the TT-30R should be for the TT-30P right? You are showing the plug side and not the receptacle?
R=receptacle and P=plug.
www.rv-project.com/resources/nemaconn.php
Do the outlets on the outside breaker use more electricity? My landlord is saying I'm stealing electricity cuz I have a space heater plugged to the outside panel using an extension cord...
Don't quite understand your question. Whatever power consumption meter records the electricity used by the outlet is who is going to get charged for the electricity.
Should the breaker in my house be a gfi breaker for my 50 amp fifthwheel?
I believe the National Electrical Code recommends it, but before having your electrican install one, have them confirm it with the NEC Article 551.
What is a Bonding jumper inside a Model: U075CTL010
See reply on your previous question..
“TERMONOLIGY” at 1:15 of the video is spelled wrong….its “TERMINOLOGY”
What happens to the low side of the input circuit? Does the low side of the transformer go to ground?
The secondary of the transformer - center-tap - is grounded. The "top" and "bottom" of the transformer secondary are L1 and L2 - both "hot" sides.
The biggest problem I've heard of is either a do-it-yourselfer or a not-so-good certified electrician installing a 240 volt 30 amp outlet on someone's house for them to plug their RV into.
I have heard a few of those stories too, which is why my advice is to tell the electrician to install the RV service in accordance with the NEC Section 551. Any competent electrician should have a copy of the NEC. If they don't, they are winging it, and not worthy of your business.
This happened to a friend of mine. Burned out both air conditioners and TVs. His service was installed but a licensed electrician but this was his first rv service he installed.
Can you tell me what is a bonding jumper plz
Basically it is a ground strap. Its typically used to ensure a good ground path in non-conductors. For example in a cable raceway, you might use a bonding jumper where one ladder section attaches to another to ensure continuity between them.
Its like that in a home as well.
Yep. The only difference in 50A RV service and 100A home wiring is the RV connector.
I don’t know why you’re calling the neutral 240 V you can never measure 240 V to ground. I understand what you’re trying to get to the neutral is grounded but you should never say that the neutral is 240 V between the neutral and hot would be 120 only, hot to hot 240 neutral to ground to be zero 35 year electrician here
I hate that people give Edison credit for "inventing electricity" when it was tesla that came up with A/C current.. including 240v split phase
It is true that Tesla was the proponent of AC Current, but it was Edison that came up with the split phase idea.
At any rate, the purpose of this video is to explain Shorepower, and not necessarily get hung up on semantics.
@@RVProject I believe your history is a little off. Tesla wanted to use 240 volts straight. Edison had invented and was manufacturing light bulbs that ran on 110 volts DC. So, the battle began and the standards people decided electricity would be at 110 volts for lights. So Tesla came up with the 110/220 volt system. At least this is what my research found years ago.
Wow, I have completely wired many new construction homes and set up my RV 50 amp plugs at the different homes I own. Your explanation was not easy for most to understand. It is easier to explain it as there is only 120 volts (give or take a few volts) going into any home panel. The two 120 legs are just out of phase with each other. There isn't any 220 volts. Each leg is 120 volts just out of phase. Everything in the master panel is 120 volt. What happens inside the machine (Welder, electric motor, etc.) using the two legs of 120volts is not important. Nothing in an RV runs on 220 volts. Everything in an RV is 120 volts.
You may have wired many homes but you do not understand the system if you think there is no 240 volts in a house or an RV with 50 amp plug.
The 120 volts being out of phase is only valid if you say with neutral as reference.
I'm so lost....... 🙄
I produced this video because of the myth that 50A service was 120VAC, which some people are belligerent about understanding or admitting.
If it is not an issue for you, then no need to try and figure it out. Just plugin your RV as you were shown by the dealership.
Your still not speaking a language a normal guy can understand simple is the key
I made it as simple as I could yet still be meaningful.