The standard for wiring under cabinet lighting in industrial applications is to run MC out of the wall to the Under cabinet lighting. This has been done on a few job sites but I don't know of any other way to wire them up. Unless I sleeve it through conduit but that would have to come out of the wall perfectly to get to the box. Also, does anyone know if it is a building code violation to run MC out of the wall to under cabinet lights. Does anyone else run into this problem?