Had a discussion with an AHJ the other day whether or not bond bushings were required on an installation. He told me that they were required because I was utilizing portions of concentric knockouts on a disconnect. I thought he was thinking about 250.97, but when I said I was under 250 volts (240V Enphase Microinverter system), he told me that 250.92(B) applies because the PV system is considered a service. I disagreed based on NEC definition of a service. He couldn't quote me code reference otherwise, but he made me put them on anyway. Have I missed anything here? Has anyone else run into this issue?