I am replacing some wiring and on the front of my house there is conduit coming from a metal wet location box into a wet location receptacle box and into a junction then a light (all wet locations boxes) ..it's like a cluster of conduit and boxes. My main concern is, is it against code to have nm in metal conduit? There is an overhang (1&1/2-2ft) from the roof somewhat covering the location. When I opened it up there was 12/2 romex.