I can't seem to find anything on this, but... Is there anywhere in the code that specifies if the ground prong on the receptacle should be in the up or down position?
There are so many pro's and con's for each direction. The Chicagoland area makes it worse since they orient the receptacles horizontally.
NFPA 70 (NEC) wise I do not know of any hard and fast rule, for good workmanship I would just keep it consistent.
The NEC does not cover the orientation of the device. It falls under installation preference and workmanship. I always install the receptacle with the grounded (neutral) terminal on top when the receptacle is horizontal, but that was my preference.
Orientation is sometimes covered in the electrical notes of building plans.
I install with the ground prong down. I think it looks nicer. There are many theories and old wives' tales about this very subject. Here is one from Hubbell:
As much as I like the theory behind ground-up, I'm not a huge fan, as it can cause convenience issues if the facility ends up using some cords with right-angle plugs--which (usually, but not always) fare better if ground is down. (I've actually seen one instance where a two-gang box had one receptacle up and one down--but granted, that was a customized setup where the end-user needed cord management in both directions for various devices.)
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