PV wire type...

Using (44) JASolar 370w panels in series and grid tied.  The wire on panel is 12AWG - 2000V.  Using 2 inverters with 4 strings and each having 410v and 10.3a.  This system is an ungrounded system when using SMS 7.7-1SP-US41.  Some of the strings will be extended to reach the inverters so I will have to make new connections.

Ordered a sample of 12AWG 600v PV 7 stranded wire.  Wire is labeled as PV Wire or RHW-2 or USE-2.  I know that in an ungrounded system you are only allowed to use PV wire.  Am I safe using the listed wire.  I attached the PDF of the wires available.