George
2005 NEC 392.9(A)1. If 4/0(all same size)or larger sum of all the cable diameters cannot exceed the cable tray width . 1.25x16=20inch.
329.9(A)2.If under 4/0 Cable fill area per table 392.9 Column #1. 1.25x16=20 table 329.9 Column #1 requires a 18 inch tray.
Ampacitys see 392.11(A)your cables would be side by side with no spaceing.
[This message has been edited by Yoopersup (edited 04-21-2006).]
