A 230v 1.5 HP submersible pump is metering about 11.4 amps per leg. The motor nameplate states running current to be 10.6A. Metered starting amperage only increases about 1A above running amperage. Should a portable 120/240 generator rated 3100 continuous watts and 3750 watts surge be sufficient? If not, please tell me how to correctly calculate. Thanks for help.