Recently bought a house where the previous owner had a smart car charging in the garage running 240V. From what I can tell it looks to be setup and connected to a different meter outside the house than my existing electrical box that powers the house. The outlet in the garage looks to be NEMA 6-30 and I'd like it setup for the typical 14-30 receptacle. Would this be an easy job I could tackle myself or bite the bullet and dish out what I was quoted to have the pro do it?