I'm tying into an existing outlet box to provide power for a new electrical outlet. The existing outlet already has 2 lines connected to it - one from "upstream" (to the fuse box) and one downstream to more outlets. The existing lines are connected to the "quick connect" holes in the back of the outlet, leaving 2 open terminals on each side of the outlet. Is it okay to connect the third new line to the side terminals, and the new ground wire in with the other two grounds?
So the new setup would consist of this:
- 2 lines (2 white + 2 black wires) connected through the backwiring holes
- 1 line (1 white + 1 black wire) connected via the side terminals (black on "long" side, white on "short" side).
- all three lines' ground wires pigtailed, with the pigtail connected to the one ground terminal on the outlet.