mshields
Senior Member
- Location
- Boston, MA
I've got a 2500A 480V feeder from an outside customer owned pad mounted transformer. The feeder will be via a duct bank for about 20 feet and then in open air the rest of the 80 feet or so to the switchboard.
Do I need to derate the cable as a result of the length that run encased in a concrete duct bank?
Thanks,
Mike
Do I need to derate the cable as a result of the length that run encased in a concrete duct bank?
Thanks,
Mike