Multiconductor cable in cable tray

[gfdonahue]

I am trying to determine the correct ampacity for paralel 250 armored 35kv cable in uncovered cable tray if I do not maintain a one diameter spacing. 392.13 A lists for covered cable tray and 392.13 B lists for maintaining 1 cable diameter.

 

[kingpb]

Please confirm that your cable is single core or 3 core.