Other contributors have said "At the primary?" is the same question as "How can primary aberration be counsel?" If you believe that these are not asking the same thing and should be answered differently, click here
Because the primary colors make the other colors. Go figure: Blue + Yellow = Green Red + Blue = Purple Yellow + Red = Orange Yep, did my figuring: Printing: yellow, cyan, magenta, plus black to make...
You have to connect the other terminal of the primary someplace, be it ground, or be it one of the other hot phases. Convention has it being ground.
(I assume you are talking about a distribution...