Zack, I still stand behind my original statement. I own both copies of the books that I mentioned, and of all the DIY books, those are the better ones. I agree, the violation you metioned is one of the few in the book. Nonetheless, it is still a decent book.
ECN members apparently feel the same way about the book:
https://www.electrical-contractor.net/ubb/Forum1/HTML/001682.html As ggardiner already mentioned, I assume there are Canadian and American versions of B&D book, and there may very well be many errors in the Canadian version.
