50/30 amp RV Park standards?

I am not going to get in the debate on how the pedestal is wired, but I have been in one Thousand Trails RV Park with the one pedestal serving two RV sites. The pedestal is wired with one 50amp and one 30amp receptacle. The first RV gets to chose 30 or 50 amps. I have had it both ways and have found no compromise on the 30amp connection. If I am the second to arrive and stay longer than the first RV, I do change to the 50amp.

Most parks have a "one to a customer" policy when it comes to plugs and outelts

Your 50 amp box SHOULD have 3 outlets a standard 50, a TT-30 and a GFCI duplex 15/20 If you plug in more than one cord you MAY be ask to leave, but standard 50 amp service is 50 amps at 240 volts divided

L1-120-N-120-L2 (that is how it is divided)

I do not like calling that 100 amps, but effectively that is what it is, you get 120 volts times 100 amps or 12000 watts total power if you are perfectly balanced.

30 amp service is one leg 30 amp or 3,600 watts.

Very few RV's need more than 50 amp service.

Good answers, with perhaps just a difference in semantics.

The most you can pull with one shore power cord (a 50 amp cord) is 2X 50= 100 amps.

Yes, the 30 amp outlet/breaker is certainly wired to one of the two hots going to the 50 amp outlet/breakers coming to the pedestal.

Could you (one rig) plug in a 30 amp shore power cord in addition to a 50-- I guess so, but have never seen it and I suspect a CG owner would be quite excited unless YOU are paying for electricity.

Generally you can pull the full wattage from each outlet concurrently. Good chance it is a shared 200 to 400 amp connection with the breakers at the pedestal limiting the output to the connector rating.

pugslyyy wrote:
The 30A will be tied to one of the 50A legs. The pedestal should have a total of 100A - 50A x 2.

Not sure about that. The 50A will have two 50A legs, 12,000 watts.

I've yet to see a 30A tied to a 50A leg at the pedistal after the 50A breaker. I leave the 50A breaker off, and turn on the 30A and still get power, So the 50A breaker is not feeding the 30A outlet.

I would suspect there is one 3 wire pair feeding the pedistal, what isn't known is it's upstream breaker at the panel

The limit will be whatever the breaker feeding the pedistal is or the combined breaker limit at the pedistal, whichever is lower. That could vary all over the place depending on layout. It could be 50A, but I'll bet it is typically higher. The last thing the CG wants is people popping a 50A main panel breaker instead of a 50A breaker at the pedistal. If they are both the same Amp rating, on overload it's a crapshoot as to which will pop first.



So in theory the max you could get if the feed allows it is:

50A two 120V legs 6,000W each =12,000W
One 30A 120V leg 3600 watts
one 20A 120V leg 2400 watts

total 19KW!

pugslyyy wrote:
The 30A will be tied to one of the 50A legs. The pedestal should have a total of 100A - 50A x 2.

Absolutely correct.

The 30A will be tied to one of the 50A legs. The pedestal should have a total of 100A - 50A x 2.