You may notice that a lot of electrical plugs only have two prongs, but outlets almost always have three holes for a plug. This third opening almost looks like a mouth to go along with a pair of eyes! Of course, it isn’t actually a face, though, so what is that third hole actually for?
Well, when a plug does have a third prong, this is used for what is called “grounding.” Some electrical devices need a safe way to let out particular currents through a sort of electrical disposal, in case there’s no other way to get the electricity out. As you can imagine, an ungrounded outlet is unwanted in electrical wiring, because then the electricity won’t know where to go, so it’s always best to contact a professional with electrical repairs to ensure that all grounding systems are properly set up with a clear path for the electricity to find its way to its own home!