"Mark" wrote in message
ps.com...


I don't believe that the NEC addresses this issue at all.
nate



All commercial buildings seem to be wired with the ground pin UP. Why
is that?


Because it makes practical sense.

Offices have had problems in the past when a paper clip would fall off of a
desk and get behind a plug and short it out. With the pin up, it will
generally fall off to the side. This is becoming accepted practice now.