Also, because how the judicial branch decides case law needs to be reviewable by the People, so that we can inform the various legislatures to adjust the law if the judicial system is not ruling to the will of the People.
Thing which are public law should be publicly accessible.
There's an online portal for NEC code book, but they made it awful, no search, no hyper links, the bare minimum.
I used codex in computer mode to collect the relevant pages to my project. (Electricity to shed).