Cable Conduit Fill

[360Youth]

Is there a code reference and/or table on how to calculate conduit fill involving cables (SO, NM, etc.)? We were discussing the topic in a class this evening and I could not find the location. The issue came up when dealing with box fill and conductors that pass thru a box with out a break. I am getting more and more used to being wrong on things I thought I knew :roll:, but am I wrong on this one, too?

 

[480sparky]

Note (5) in Chapter 9 Tables.

 

[360Youth]

Note (5) in Chapter 9 Tables.

Thanks. Class got out late and I was getting too tired to look.

 

[don_resqcapt19]

For conduit fill with two conductor NM you also need to look at Note 9.

(9) A multiconductor cable or flexible cord of two or more conductors shall be treated as a single conductor for calculating percentage conduit fill area. For cables that have elliptical cross sections, the cross-sectional area calculation shall be based on using the major diameter of the ellipse as a circle diameter.