I just got "nailed" by an inspector. I ran a 12/3 Romex to a Washing machine outlet in a laundry room from the panel. I then took a 12/2 to the garage GFCI outlet. Red takes care of the Washer....Black takes care of the Garage. I was written up..."Garage Must Have Designated Circuit". Perhaps I am wrong in assuming that the shared neutral violates the "designated circuit" rule......a rule I can't even find in the codebook. My questions are: Does the NEC require a designated circuit for the garage and does the shared neutral violate a "Designated Circuit description?