Creeker
Member
- Location
- Hickory, NC
I have reviewed similar post and need others opinions.
Article 240.21(C)(4).
A MV to LV transformer (12 kV Delta to 480 Y solid ground) is located outside in an open vault. The primary and secondary cables run underground. The secondary cables run from the transformer, under transformer pad, then underneath a parking deck and then to an electrical room located in the middle of the parking deck. The electrical room is located approximately 150 feet from the transformer. There are four feeds from the transformer to four CT boxes and then to fuse disconnects. Two of the feeds consist of two sets of 4 conductor cables. The other two feeds consist of three sets of 4 conductor cables. Each set of four conductors are in their own conduit.
Article 240.21(C)(4)(2) states that "[t]he conductors terminate at a single circuit breaker or a single set of fuses that limit the load to the ampacity of the conductors..." Since there are four sets of fuses, is it possible for the installation to be compliant with Article 240.21(C)(4) as it is currently installed?
Article 240.21(C)(4).
A MV to LV transformer (12 kV Delta to 480 Y solid ground) is located outside in an open vault. The primary and secondary cables run underground. The secondary cables run from the transformer, under transformer pad, then underneath a parking deck and then to an electrical room located in the middle of the parking deck. The electrical room is located approximately 150 feet from the transformer. There are four feeds from the transformer to four CT boxes and then to fuse disconnects. Two of the feeds consist of two sets of 4 conductor cables. The other two feeds consist of three sets of 4 conductor cables. Each set of four conductors are in their own conduit.
Article 240.21(C)(4)(2) states that "[t]he conductors terminate at a single circuit breaker or a single set of fuses that limit the load to the ampacity of the conductors..." Since there are four sets of fuses, is it possible for the installation to be compliant with Article 240.21(C)(4) as it is currently installed?
