5kv wire size on 600v application

[Davecassano]

I have 750kcmil wire with 5kv rated insulation. The wire will be run from a transformer to a main distribution breaker for our load centers. The run will be in a short underground vault from the transformer to the Main. We are using 480V and my question is what table do I use to figure the ampacity for my wire?

Thank you,
David Cassano

 

[don_resqcapt19]

You just use the standard Table 310.16 ampacity. Don't forget to clean the semi-conductor coating back at the terminations if the cable is a shielded cable.