I am just finishing up my new shop build (32X40), and down to finishing the wiring. What I am thinking is running 12-2 for my recepticals (4 on each circuit). My question is it okay to run the 12-2 horizontal then above each receptical install a junction box then tee/pigtail a 12-2 drop down to the receptical? The horizontal circuits will be about 8' above the floor, then the recepticals will be located 48" from the floor. The wiring from the junction box to the plug will be protected in 1/2" pvc.