It is a dedicated line going to the rear air conditioner.Added another one to What was the thought process NONE column. Before adding more to that column (ya should have asked before drilling)I was hoping someone with an allegro had needed to get to a wire or something in the ceiling and had the best way to create the least amount of repair work. I know I need a 1'x 1' hole unless the wire can be pulled from?? Thank You for your help.