Have used compression fittings and EMT outside for years and have not had a problem yet. I saw this before on another site. I still feel that any one who is looking for a non issue to raise does not have enough to do. For entrance to the top of a J box that is not threaded, I'll use a meyers hub. All the threaded type of boxes and fittings need is to be made up wrench tight. JMHO
