Originally Posted by Blowntri5
Yet another question. The cable that is coming from my breaker box and going to the garage has 4 wires. can I just put a breaker box in the garage and put in 220v?
Not if it is being fed from a 120V breaker in the box. But if the wire is 10 gauge or larger (smaller numbers) you could potentially use it with a new 30amp 240V breaker to bring it to the garage. You would want either use a GFCI breaker, or a regular breaker with the Home Depot spa panel that you could use in the garage. That being said, it is not likely that you have 10 gauge wire going to a 120V 20A receptacle, as it is likely no larger than 12.