Professional Drain Cleaning Services in London, ON

How long does knob and tube wiring last? Knob and tube wiring, a relic from the early days of electrical wiring in homes, still exists in many older properties. Understanding its lifespan and the critical need for professional intervention is crucial for homeowners to ensure safety and compliance with modern electrical standards. History and Characteristics of Knob and Tube Wiring Developed in the 1880s, knob and tube wiring was the first standardized method to wire homes and buildings. It remained popular until the 1940s. This system involves insulated copper conductors passing through ceramic tubes (or knobs) to prevent contact with wooden framing. Unlike modern wiring, it lacks a ground wire, which poses several safety risks.