Feeder conductors with an equipment grounding conductor are piped into the bottom of a roof-top AC unit. Once inside the roof-top AC unit, these insulated conductors are not run in any raceway but are bundled together and pass three feet through the unit through a bushed hole into a diconnnect switch mounted on the outside. The conductors return thru a bushed hole back into the AC unit and are then wire-nutted to short conductor leads extending from a bushed hole in the controller enclosure. (Apparently the factory-installed leads were meant to be wirenutted outside its control enclosure, but inside the AC unit.) It looks wrong, but is it correct to run un-enclosed feeder conductors inside an AC unit and is it correct to wire nut the conductors to the factory leads without this termination being enclosed in some kind of box enclosure? The wires do not appear to be subject to abuse.
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