That's the reason I keep going back to it. I got my first copy when I was starting out as an EC, thinking I'd use it other ways. I found a lot of work, in existing dwellings built before 1950. Reading the Handbook gave me insights into the installation techniques used, and gave me ideas about tools to use, and even ways to use them.
I think the best one, the one that has wow'ed the occasional customer, was a sectional drill bit made out of 18" and 24" lengths of 1/2" threaded water pipe. The good ole guys that electrified the fine old gas lit Victorians in the 1800s used a brace and bit and these homemade extensions to drill from the basement to the attic of even two story homes.