ro_sie wrote:
We are going to run only a 30 amp line because we don't plan on the rv to be used while parked.
It does not cost much more to do 50 AMP vs. 30 AMP.
When I wired my storage bay for my 30 AMP Laredo 5th Wheel, I ran wire capable of providing 50 AMP service. That was 13 years ago.
August 2015 I purchased a Class A with 50 AMP service. I swapped out the 30 AMP RV outlet for a 50 AMP RV outlet and all is good. I eliminated the need for a 30 AMP to 50 AMP adapter and have more than enough ampacity for my Class A.
The one thing I did not do when I built the storage bay - I only built it 34' long and 14' wide. The Class A is 35' long. I just added 8' to the storage bay.
If you are really concerned about cost, have the backhoe dig two deeper channels where the RV wheels will rest and just pour the rest of the concrete at 4". You can also use re-bar where the RV wheels will rest instead of wire.
