A circuit for an RV
I want to run a dedicated 30 amp circuit for my RV.
The problem is that I have an older panel for which it is difficult to get breakers now. I believe they are Zinsco or something like that. The panel is in good shape and I had an electrician come out and quote replacing it, not too cheap, but his advice was if it isn't broke there's no need to replace it.
So this is what I'm thinking...
There is an unused 50 amp breaker in the panel that used to go to a hot tub. I'm thinking of just installing a sub panel and then connecting it using the unused 50 amp breaker. I have plenty of room to put this right next to the main panel. Since the sub panel will be new I should be able to easily get a 30 amp GFCI breaker for it. Then I will drill 1 inch holes through the floor joists and run 10/2 wire all the way to the garage exterior wall. This is about 50 feet. I will drill through the wall and then mount the RV box on the outside.
A few questions:
Do I need another ground rod?
Is 10 gauge wire okay for a run of this length?
Would it make more sense to buy an RV box with a 30 amp breaker and just run wire from the 50 amp breaker directly to the RV box, and if so, what gauge and type of wire would I need to use?