Need info on AFCI requirements
Assuming that you're concerned with AFCI requirements in dwellings, the generic National Electrical Code (NEC) 2014 edition, Section 210.12 only requires AFCI for selected "120-volt, single-phase, 15- and 20-ampere branch circuits", according to their locations.  Additional requirements may apply for plug-connected room-air conditioners (Art 440) and with interconnected power sources (Section 705.12(D)) related to utility-connected inverters.  In theory, a 230-v A/C requires "factory-installed" AFCI, if connected via plug and cord. Section 440.65.

Local codes may vary (somewhat wildly) on the requirements for any AFCI at all.