15kV Conductor Ampacities

[csully12]

I have an instance where I have an aboveground 15kV ductbank encased in concrete. The duct bank is suspended from the ceiling. Does anyone know what ampacity chart for 15kv cables would be the most accurate for this type of installation?
Thanks in advance.

 

[Mayimbe]

see IEEE 835-94

 

[wirenut1980]

NEC Tables starting with Table 310.67. These tables assume a certain configuration of the cables. De-rating may be necessary.