Should the ground lug on a receptacle be up or down?...
 There are good arguments for both sides of this issue. The reason i chose to take this side is because of having to replace some receptacles because they were shorted out with the ground lug down. That is why i believe you are better off having it up. This way if the plug is not inserted all the way, or becomes loose, it would give some protection against falling metal objects going across the live and neutral blades and shorting them out. They would land on the ground lug of the plug first. One of the reasons for putting the ground lug down is, there is less of a chance that the plug will come loose, and disconnect the ground connection.

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