Size and specify electrical components, including AC and DC cabling, inverter and auxiliary transformers, MV switchgear, ring main units, reclosers, relays, combiner equipment, station service, UPS and DC systems, and reactive power compensation equipment. Perform and review power system studies, including load flow, voltage regulation, short-circuit and equipment duty, arc flash, grounding, insulation coordination, cable ampacity, protection coordination, relay settings, and control and operating philosophies.