Yeah, "one day for a full basement rewire" sounds sketchy. I've seen crews do it, but they usually have a team of three and they cut every corner (like not stapling properly). Honestly, if it's just one person, it's gonna take at least a week to do it right.

Isn't that only for threaded connections, not the pipe itself?

Most modern forges actually use steel... iron's too soft for a lot of work now.