George
392.9(A)(1)
Where all of the cables are 4/0 or Larger ,the Sum of the diameters of ALL cables shall not exceed the Tray width, and the cables Shall be installed in a Single layer. 1.23x16=19.68 = 20 inch tray
The table your using is for Smaller then 4/0 thus does not apply.(392.9(A)2.
392.9(A)2 Where all the cables are SMALLER then 4/0.
392.9(A) 3 is for cables refers you to Col.#2 BUT thats for 4/0 and larger (AND)(Smaller cables.(Mixed).and only the smaller cables are to use the table. The 4/0 and over must still be placed sise by side.
Table 392.9 Column 2 Applicable For 392.(A)(3) ONLY.
2002 NEC is the same as 2005.
[This message has been edited by Yoopersup (edited 04-22-2006).]
