Hi guys, I got a question on electrical work. In order to get power in my garage i had to run r/v extention cords to my garage from a outlet in my house. Yes i know its not the smartest thing to do BUT at the time we were renting the house and have since bought it. There are other repairs inline before the garage. Anyway i need to run a ground wire from the breaker box in the garage i guess in the ground. What do i need to buy to do this. The problem is if i touch anything metal in the garage i get a small shock. I know i know how stupid im sounding right now.