Is there a library nearby?
http://www.library.ca.gov/html/gps_cal3.cfm Otherwise a 2002 NEC should do you quite well. However I would be more worried about part 6 of title-24, thats where things get wierd....
http://www.bsc.ca.gov/title_24/documents/T24Pt6.pdf Other than meeting local codes for the State, you should be more aware that Cities, and Towns can add things in too.
"Is there anything that would prevent NMB used as a wiring method?" Building Type, and your bid spec'. "barracks" sounds Federal? CEC may or may not even apply, definately double check your bid spec'.
