Let’s start out with the first basic requirement in 705.12(D)(2): 125% of the inverter output circuit current must be used for the ampacity calculations for most of the interconnection methods used. Whether interconnecting the Inverter Output Circuit through a breaker at the service panel or directly to a feeder, it is important to first know the inverter output circuit current.
Don't wait to let the Electrical Inspector teach you the new 2020 NEC. Save time, save money,
and pass inspections the first time with the NEC Challenge.
Learn 156 of the most important 2020 NEC changes by having Code-based Q&A delivered by text or email three times a week.