Cable trays, don't know jack about 'em

here's the deal, 6 -4" conduits, 208 3ph parrallel 600kcmil al x 6 (2040amps , 75 deg)
making into a 24" wide swithgear

so would 6 groups (per exhibit 392.4, 2011 handbook) be under 24"?

~S~