Hey I have question.What determines when a disconnect is needed. Residential.Here`s what I mean back to back I don`t need one guy here says if I leave meter can and drop under wall to crawl space and back up even if meter is back to back I must have a disconnect. Or if I go over head and drop back into the panel I must have a dico.Is there a section where his interpitation is wrong? Please send some artical #`s Hope this question makes sense.Some poeple say 10ft of cable but have`nt seen it in the book. Thanks for some insight on this.