Extending a circuit to exterior wall

[davyray]

Thanks in advance for any help.
In my attached garage there is an old dryer outlet (240v, no ground).
I have removed the outlet and plan to convert it to a standard GFCI 120v outlet (changing the breaker and color coding the wires as appropriate). The existing 10 gauge wire comes straight out of the wall, so I am planning to run it into the back of a surface mount J Box, connect the 12 gauge wire inside, leading to a a "device" box right next to it.

From there I want to extend a circuit to an exterior wall. I already have some 1" EMT and Romex (12-2 w/ground).
I am getting conflicting info about running the Romex through the EMT.

(The whole shebang is about 4' off the floor, and the exterior outlet will be as well).

My main question is about the Romex in the 1" EMT, but any other comments would be most welcome!

 

[Grumpy365]

It is my understanding there is no problem pulling nm thru conduit, you just cant run it in a wet location, (underground etc) or anyplace the nm wouldn't be acceptable on it's own merit.

I am sure you will get further clarification momentarily.

 

[Norcal]

NM cable is for dry locations only & exterior conduit is classified as a wet location by the NEC.

 

[Charles (in GA)]

A single run of Romex in 1" EMT won't get anywhere near the fill limit. Code says on a sheathed or jacketed cable of multiple wires, that you take the MAJOR diameter of the cross section of the cable (code uses the term "major diameter of the ellipse") as Romex is somewhat oval shaped, and use this diameter as if the cable were ROUND to calculate the area cross section and compute the fill. Code also says you treat the cable as ONE WIRE, and use the fill precentages for one wire (if you are only running one romex in the EMT.

This is all in the very beginning of Chapter 9 (Tables) at the back of the code book. Table 1, notes (5) and (9) on the first page of the chapter.

Charles

 

[davyray]

NM cable is for dry locations only & exterior conduit is classified as a wet location by the NEC.

I am running it along an interior wall. It will end at an exterior wall, where the cable will go through into an enclosed outlet box...