RV site feeder conductors

[freeland]

I have a question for calculation and feeder ampacity for each segment of the circuit. I have calculated 120 amps for (4) 50 amp pedestals. With 75% demand factor, the feeder should not have trouble with heat and a/c loads?
Also with 125 amp breaker, I thought the wire should not be less than AWG #1 at any segment of the circuit, even if the last pedestal sees only 50 amps.
Is this correct?

 

[barbeer]

I am unsure about your question. I believe you are asking if #1 is o.k. to run for all sites.? There should be a voltage drop calc performed to help determine wire size......along with the ampacity required for the site(s).

I guess what I am trying to say is be more specific.?!

 

[iMuse97]

If you have determined your breaker size (125A in this case), then your wire is required to handle that ampacity: whether that size is AWG #1, or a larger size is dependent on the distances you are running, and the load you are serving.

 

[hardworkingstiff]

Also with 125 amp breaker, I thought the wire should not be less than AWG #1 at any segment of the circuit, even if the last pedestal sees only 50 amps.
Is this correct?

It is my understanding you are correct.