You usually have to pigtail the ground line, because most recepticals only
have one screw for the ground connection. Also they down want to take any
chance that the ground line will be broken to downline items.
The hot and neutral can be wired thru using the two screws on the
receptical.
"donald girod" wrote in message
...
Is there a code requirement that receptacles be installed using pigtails?
Example: an outlet box with two 12-2 cables and a receptacle. Can you
just
wire through the outlet (use all four screws), or must you create pigtails
for the conductors, thus using only two screws on the outlet (plus the
ground of course). I am sure that wiring thru was permitted 5 years ago
and
even more recently, but things change.