Niether. I always follow current NEC using MA ammendments. I also frequently use the NFPA, UL, ADA....
Here at the University nothing in-house gets inspected which has always seemed to me to be almost criminal. I spent 5 years in the maintenance electrical shop and about 6 years ago I became responsible for the computer room wiring (power, data, telecom, hvac) for a total of 11 years. I run my own show in the computer room as they realize the importance of their raised floor more and more as the days go by and also realize that the electric shop cannot be trusted to perform work in this critical environment. I've been told that the in house Professional Engineers are responsible for the work they stamp. Does this sound correct ? I never bought it and always wished that inspectors would become part of the process but this would slow everything down in an already sluggish environment.
My biggest frustration was working in the electric shop dealing with guys that have been protected by the state system for so long they have forgotten what goes on in the real world. The best move I ever made was moving over to the computer room side of the house.
I have often raised the question about inspections on in-house work and frequently got the cold shoulder from the electrical supervisor, whom by the way is the worst hack I have ever seen.....but he is protected by the state system. Very frustrating when you start to understand the scope of damage that this guy has allowed to pass as acceptable work. This was why I got out of the shop and moved on to bigger and better opportunities.
By the way, I know that my facility is not the only state buildings not being inspected. There are many others.