If your home was built before the 1960s, you might still have some old two-prong ungrounded outlets. The correct name for an ungrounded outlet is a non-grounding-type receptacle. So here, we'll use ...

The apartment I will be moving into on Wednesday has three-prong receptacles in all the rooms. My GFI receptacle tester ($5 from the hardware store) tells me that most of these receptacles have an ...