padawan learner
Member
- Location
- IN, USA
Purchased 1400kVAr Power Factor and Harmonic Filter unit made of 2 enclosures. The rated capacitor current is 1682A total. Sized the ocpd to feed the unit at 135% X 1682=2270A which is a 2500A breaker and installed it into the switchgear (all with the blessing, "yes this is right", from the application engineer). When the "unit" arrived, it has bus bars in each of the two enclosures with 700kVAr split into each panel. There is one controller that turns on stages of caps/reactors in both panels.
The 2500A ocpd is still the right size for a feeder. Do I have to consider the feed to each enclosure as a branch and follow the rules of feeder taps in 240.21? Or since it is controlled as a unit, can I consider it to be one unit and still split the feed into half for each enclosure and not worry about the feeder tap rules? The run of wire from the 2500 ocpd to the panels is well less than 25'.
Thanks for any help.
The 2500A ocpd is still the right size for a feeder. Do I have to consider the feed to each enclosure as a branch and follow the rules of feeder taps in 240.21? Or since it is controlled as a unit, can I consider it to be one unit and still split the feed into half for each enclosure and not worry about the feeder tap rules? The run of wire from the 2500 ocpd to the panels is well less than 25'.
Thanks for any help.