5kv wire size on 600v application

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Davecassano

Member
Location
Oregon
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

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
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.
 
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