Meaning of SA mean in "GFI - SA" electrical panel labeling?
In this context, "SA" means "Small Appliance", a specific designation required per the NEC, article 210.52. Dwellings are required to have a minimum number of SA circuits, not to be confused with GFCIs required for outdoor, bathroom and garage circuits. Labeling them that way in the panel makes it easier for an inspector to see so that the electrician can pass the inspection without having to prove to the inspector that he has the proper number of SA circuits.