50 amp down to 30 amp plug -- still 50 amp?

Main breaker? ya mean at the pedestal? :E

Nothing to do w/ the question, but don't even try to figure out this 30/50 amp service stuff, because it is stupidly wrote wrong !

W/ a 30 amp service, you have a "total" of 30 amps available to your RV
A 50 amp service would lead a person to believe that you have 20 more "total" amps available to your RV, when in reality that is not true at all.
It is really 100 total amps available.

But no different than the guy that wrote the dictionary, he was an idiot too.

the potential for 50amps is there
it will take more than 50 amps to trip the breaker at the pedestal
BUT your RV 30 amp breaker means you can never use more than 30 amps
what has not been mentioned
is there will be less voltage drop, so when drawing 20+ amps the voltage will still be higher than what it would have been if you were plugged into the 30amp pedestal outlet, even at 30 amps the voltage should still be 115~120v to the RV

If you have a 30 amp RV, it will have a 30 amp main breaker, limiting you to just 30 amps into the RV.

If I am using my voltage booster, it will use about 2 more amps than the RV consumes, and I will try to use a 50 to 30 amp adapter while using the booster. I would still be limited to just 30 amps into my RV power panel. ..

Good luck,

Fred.

Not true. Not even close.
Although everything still works. Just not all at once on 30 amps.

I believe you are saying that you are plugging your 30 amp RV cable into the pedestal 50 amp jack via the indicated adapter. If that is correct, you will have one leg with 120V and 50 amps available at the RV end of your cord. You will not have 50 amps inside the RV since the RV 30 amp main breaker will limit the amount available inside your RV to 30 amps. That is good since you do not want to draw 50 amps through the small wires in that 30 amp cord!

The 50-amp outlet is capable of providing as much as 50 amps. The current is limited by the breaker to protect the wiring from service panel to power pedestal.

If you plug in a 30-amp plug using an adapter, you should be limited to 30 amps by the main breaker in your rig, which is sized to protect the RV wiring, e.g., the shore power cord.

The actual current you draw will be determined by how much stuff you are running, and what it draws in the aggregate, up to 30 amps max.

Wayne

What is your MAIN Breaker.............30A
That is it......30A regardless if using a 50A/30A Adapter


Point that out to 'that guy' and please do NOT allow 'that guy' to do any electrical rewire/wiring job for you

Simple way to look at it - if you could get 50A thru a 30A plug why would they ever have installed 50A plugs? And, would a 30A plug then really be a 30A plug, or would it be a 50A plug?

Bill

This is what happens when you plug a 50A (MALE) to 30A (FEMALE) adapter at the camp ground pedestal...



As you can see only one HOT leg of the 50AMP service is being used. Even if you are plugged into a higher amps leg your internal 30A circuit breaker will only allow you to use 30A of current.

Usually the connections are much cleaner on the 50AMP side as they really don't get used as much as the 30A service does...

We use the 50A(M) to 30A(F) adapter all the time in order to get better 120VAC service sometimes...

We have never had any problems using the RV50A(M) to 30A(F) adapters

Roy Ken