Sean is the best! He motivates you to learn in a fun way. He's responsive when you send in questions or comments, thoroughly qualified to enable you to succeed in passing NABCEP exams!
Having few years of experience I was already familiarized with NEC but after taking this course I do feel more confident about where and what to look for when designing for solar PV projects.
The class is well organized and the instructor share his incredible experience on the field. Experience and example are very valuable if match with a good theory explain very well.