SAN FRANCISCO (KGO) -- Few of you have probably heard of knob and tube electrical wiring. But, it turns out you should know more, because insurance companies are now canceling and denying homeowners policies for having this old electrical system.
Inside many old homes in the Bay Area is an outdated electrical system, called knob and tube.
*****
My first house, a Craftsman home built in 1921, had knob and tube wiring. Never had a problem with it.
