I notice that Chicago-area members mention a metal-raceway requirement for residential [maybe ALL?] structures in the region. Is it possible this evolved from 1871?
An online article made me wonder of the requirement’s evolution. Sorry for the long URL, but it is an interesting account from the perspective of a Chicago telegrapher [the original digital communications/”chat room”] during the great 1871 fire. http://groups.google.com/groups?q=1871+group:comp.dcom.telecom.*&hl=en&lr=&ie=UTF-8&group=comp.dcom.telecom.*&selm=telecom23.242.1%40telecom-digest.org&rnum=1
