Electrical – Why does this receptacle have the ground tied to the neutral

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I was replacing some outlets in my house with tamper-resistant ones, and came across one where the white and ground were wired together, as seen in this picture. Why? Is that okay or appropriate ever? It was clearly done on purpose.

When the house was inspected, the inspector detected significant current on the ground. Is it possible that this wiring is the reason?

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Best Answer

It's called a bootlegged ground. This is commonly done in older houses that had a two prong receptacle and was updated to a three prong receptacle. The old house didn't have a ground and this tricks the inspector's electric checker, so your house passes inspection.