Does your current wiring have three wires going to a plug? There you will find either three or five wires. One of the wires wraps around a screw. This is called the ground wire. The other wires stick straight into holes on the back of the outlet. They can be disconnected by inserting a screwdriver into the slot next to each wire and then pulling the wire out. Make sure that you only disconnect one wire at a time from the old outlet or you will have a big mess. You also need to be certain to plug the wire into the same location on the new outlet. This will help to keep you from getting the wires mixed up. If you only have two wires, this is very old wiring that does not have a ground. I would then call in an electrician to look at your whole house before doing anything.
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