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This looks like an outlet with only one receptacle, but why?

It's mounted about 7' up, in a basement-level room in a school building. It is stamped 15A/125V, but I've never seen something like this before.

My question is, is it indeed a standard (US) 120vac outlet, can I plug regular things into it, and why does it look so strange/why does it only have one receptacle? Also, what's that little hooky thing for at the top?

enter image description here

TylerH
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nuggethead
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1 Answers1

79

It's for a plug in clock. You hang the clock on the little hook, and the receptacle is backset so the plug does not interfere with the clock sitting flush against the wall.

Gunner
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