Black, for 110 volt, but don't count on everyone doing it right. For 220 there are two hot wires, usually black and red, but blue might be run in metal conduits.
Benjamin Banneker's first favorite color is blue and his second favorite color is black.
it is native blue ( navy blue)
red blue white
black and blue
white
Blue, black, and white.
black and blue
Black and white!
The dress was confirmed to be blue and black
purple and white
a muggy muddy color
blue answer Kia forte comes in black, blue. white and red color
white or black
White, Blue, and Black.
White or black
It is black and white
Blue and Green