Knob and tube

It consisted of single-insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via protective . Knob-and tube wiring is very common in older homes, and is somewhat controversial. Understanding knob-and-tube wiring and its common issues will help you . Instead of the three wires found in modern electrical installations, knob and tube wiring has only two — a black (hot) wire . In the time of Thomas Edison we used pocelain insulators knob and tube system.

John Harnden explains the influence of Czech pottery makers (Cermak Family) on development of insulators.

Then the next guy might see the new romex and make some assumptions about the rest of the wiring.

The other time you really really should replace it is if it runs through insulation, especially blown-in cellulose. Dear Home Inspector: Our home inspector recommended replacing the knob and tube wiring in our home. What is your opinion of this type of wiring? When installed correctly knob and tube wiring was, in some ways, superior to current wiring . The electrician installed the wire via porcelain “tubes” that the wires traveled through the joists through and then were attached to the joists via the . If you live in an older home, knowing how to identify knob and tube wiring can help you determine if your electrical wiring needs an overhaul.

Smith of King of the House Home Inspection, explains the history of the still commonly seen knob and tube wiri. This video, produced and narrated by Steven L. To say knob and tube is safe besides the insulation is misinformation. There were to cloth wires leaving the panel going to the homes original fuse box. With this circuits turned off the to.

In knob and tube wiring, wires were held to the wooden structure by ceramic knobs, and were protected by ceramic tubes when they . Square One describes knob and tube wiring and explores considerations if you have this type of wiring in your home. Learn about this old electrical wiring system and learn tips for replacing it. If this is weighing on your min give us call! Facts and myths about knob and tube wiring in old Toronto houses by Toronto Realtors Brendan Powell and Melanie Piche, the BREL team at Bosley Real Estate.

One of the biggest questions we are asked is when retrofitting an older house, how to be careful with knob and tube wiring. Its exposure in the attic and walls creates concern. However most electrical experts suggest it be inspected and removed if not in perfect condition.

Knob and Tube wiring is considered both safe and dangerous.