NEC 220.87 allows for the existing load to be used for load calculations as follows:
- The maximum demand data is available for a 1-year period.
- The maximum demand at 125% plus the new load does not exceed the ampacity of the feeder or rating of the service.
- The feeder has overcurrent protection in accordance with 240.4, and the service has overload protection in accordance with 230.90.
Is maximum demand in KW or KVA?