Perhaps the most unsafe electrical outlet is the lower left. Why? The two live conductors are often place above the grounding pin, allowing anything conductive falling to make contact with the live terminals. Put the grounding pin on top, you say? An experienced electrician would do that, but people for some reason would prefer to "not have a face upside down." And the two cheap metal tabs that make the "neutral" and "hot" are easy to dislodge, compared to round, reinforced pins. #USA #engineering #safety