From a publication here titled "State Electrical Act"
RULE NUMBER 18
Adoption of the National Electrical Code
The minimum electrical wiring standard shall be the 2014 National Electrical Code,
National Fire Protection Association Publication Number 70-2014, as adopted in whole or
amended in part by the State Electrical Board which is incorporated herein by reference and
filed with the Secretary of State.
I'm sure if I look hard enough in the state laws there will be an entry that says about the same thing. It (likely) will be updated sometime this year to change it to 2017 NEC, but has to be passed by the state legislature before that will happen.
This means the 2014 NEC is state law for electrical installation standards, if they want to make amendments to what is in NFPA 70, then they must note those in the law books as well. Right now I don't think we have any amendments, but have had some in the past.
The publication I got that from is not the law itself, but is a publication the electrical division puts out for convenience that contains nearly all the rules and regulations that are associated with their department that are in the law books somewhere.