Got a question for you. My recent 1953 cape has many 2 prong outlets. I am looking to switch them over to 3 prong outlets. I checked the metal boxes and they are grounded. When I switched over to a 3 prong outlet, I added a ground wire from the outlet to the back of the box. I flipped on the breaker and the outlet shorted out.
I then decided to remove the ground I added and the breaker/outlet works fine. I even checked the outlet and the 3rd prong is grounded.
Any thoughts would be greatly appreciated.