NEMA ICS 3.1:2009
NEMA ICS 3.1:2009 Guide For The Application, Handling, Storage, Installation, And Maintenance Of Medium-voltage Ac Contactors, Controllers, And Control Centers Pertains to AC medium-voltage contactors and Class E controllers rated 1,501-15,000 volts, installed in accordance with the National Electrical Code (NEC), NFPA 70 and the manufacturer's instructions.