and is it then your contention that only people who have taken accredited training and given the official seal of approval from momma gov knows what they are doing? that it's just not possible for someone to know what they are doing without those officially sanctioned items?
i once had an occasion to run 230 vac underground wiring from my main to a 60 amp subpanel in my garage
i went to the city electrician for the necessary permit and he showed me what to do and even suggested a couple of electrical supply stores where i could get the necessary materials. when i was ready, he came out to inspect what i had done and approved my work.
'mama' gov may be a pain sometimes, but it can also be quite friendly sometimes, especially in small towns...but then this was about 30 years ago
a licensed contractor would have cost me several times what i did for myself with the help of 'mama' gov
oh well