Why do you ask this question?
Texas is in the USA, and it is my understanding that Texas uses the NEC.
I would say that it does, but I cannot be sure of what edition you would be under.
Is the facility a Chapter 5 special occupancy, or a other location where products are manufactured.
You do use UL or other labeled equipment.
This will be an interesting subject, and I am sure the rest of the members will enjoy hearing your story.
PS: Someone said that the NEC is available for Free in Texas, is that true?
Joe Tedesco, NEC Consultant