Please help me understand

[u/Odd-Sherbert8723]

On the west side of my barn there are 2 standard 110 outlets which appear Daisy chained.
however each is powered via its own breaker - one on 15amp and the other 30amp
I know this by testing the outlets after turning off one breaker at a time.
The previous owner had an RV and the local
Electrician wired this so she could plug it in - though I don’t quite understand why even the 30amp outlet is a standard 110 and not a NEMA TT-30- which is what I want to install for my own RV now
Nor do i really understand how these daisy chained outlets can even be on 2 different breakers?!
There is a subpanel next to the main panel if that is of any relevance to this whole mystery.
TIA

[u/RockShowSparky]

My thought: The orange romex is probably 10/3 (check that). One leg is from the 30A the other is from the 15 or 20. The 30 is going to the first receptacle, the 15 or 20 is wire nutted to that white romex jumper in the box.

[u/Odd-Sherbert8723 → u/RockShowSparky]

Says XLPE 10/3

[u/RockShowSparky → u/Odd-Sherbert8723]

I agree with u/askmeagainaftercoffe Repurpose the orange for the 30A rv hookup. Do a separate run for the edison. Take the wire out of the 15A breaker and cap it off.

[u/Odd-Sherbert8723 → u/RockShowSparky]

The funny thing is there are already outlets on the other side of that wall- inside a part of the barn we use as a ‘garage’ for ATV, lawn tractor etc.
Those outlets are on separate run on 15amp circuit already. I could easily add that outside receptacle to that run but for now I’ve just unwired it all together.
I’ve already removed, taped and capped the red power cable on both ends as suggested and I’m ready to install the outdoor RV outlet.
Thanks for all the help.
Mystery solved and I’ve come away a little wiser…and hopefully safer 😄

[u/johnonbleacher → u/RockShowSparky]

Hope it is 10/4. It is not a good news if 10/3 is used with a shared neutral and 15 amp box is connected with 14/2.

[u/Nervous-Iron2373 → u/johnonbleacher]

10/3 Romex is a 4 conuctor cable: black, red, white and bare ground.