Adjust Feeders and branch circuit sizing based on derating
Adjust the wire size of feeders and branch circuits based on derating. This calculation needs to account for Ambient Temperature Correction Factors, Adjustment Factors and conduits on a roof (even though NEC 2017 eliminated this one). For example, there is an option in DME RT feeder sizing that asks about a double neutral. If we are acknowledging we need a double neutral, it should be understood the neutral is a current carrying conductor and should adjust the wire size and conduit size per the NEC.