I am trying to determine the most cost effective way to add a 30 amp breaker so that I can plug in and run the air conditioner unit on my RV. Currently my panel is full and I don't have space to put in a whole new panel. I do have a 40 amp hot tub breaker box located outside but don't think I can add anything to it. So is it possible to just add another 30 amp breaker to a full panel and then wire a 10 gauge plug to it?
I like the idea of adding something to the hottub box if I could just wire a plug in right off of that box. This is a picture of the hottub box. It is a Beachcomber GFCI box. It looks like it has an open spot. I would just have to turn the hottub off to run the RV I assume
Hot tub breaker outside
Picture of hottub box information