TheDawg
Electrical
- Aug 7, 2013
- 5
I am working on a Power Distribution Unit where the ETL Listed Equipment has a 500A Main CB feeding
a 300kVA Delta-Wye Transformer (480: 208/120). The Transformer Secondary Feeds Six 225 Amp Molded Case
Circuit Breakers (ie. Primary Protection Only). What NEC Sections would pertain to the sizing and length
of the secondary conductors feeding the six circuit breakers on the secondary side? I am questioning the
size of the conductors used.
a 300kVA Delta-Wye Transformer (480: 208/120). The Transformer Secondary Feeds Six 225 Amp Molded Case
Circuit Breakers (ie. Primary Protection Only). What NEC Sections would pertain to the sizing and length
of the secondary conductors feeding the six circuit breakers on the secondary side? I am questioning the
size of the conductors used.