Greenhouse frame is up and now we’ve moved on to wiring…

My Electrician, also my F-I-L has decreed we need to do the wiring according to the new NEC (updated 15’) standards that have all sorts of very fancy, expensive regulations. (Which Im’ having a hard time finding)

In the past, we’ve understood that a greenhouse is a farm structure, which is exempt from inspections…

I found this article by John written AFTER the updates that https://www.greenhousemag.com/article/tech-solutions-electrical-system-upgrading/

That recommended using EMT...

We’ve always just done the wiring according to dusty, wet areas.

Thoughts?