A DIY upgrade QI have a question that concerns a knob-and-tube style installation in a residential home. Before my question, I'll provide some details of the house. This house is owned by my retired mother, and was owned by her parents before her. The house was built in the 1890s, without electrical wiring. In the early 1930s, knob-and-tube wiring was installed. During the next several decades, additions
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