Knob and Tube Wiring - What Is This Stuff?

A short video by McCurdy Electric about Knob and Tube wiring, showing some of its characteristics. It is called "Knob and Tube" because the wire you see here in the video is supported every few feet by porcelain "knobs" and passes through holes made in wood framing members via porcelain "tubes" to help insulate the conductors. Used back as far as the 1880s, it should be replaced whenever possible. Please see my blog post on this at www.McCurdyElectric.com/Advisor

Category:

Education

Tags:

• Knob and Tube
• Knob & Tube
• Electrician
• Electrical
• Old Wiring
• Electric

[jeffweissman]

thumbs up on the information

[PoutinePete]

That bird chirping is really starting to get to me!

[BoomerangTown]

My house on the 3 floor was a attic until they finished it off with sheet rock we got 3 spaces behide the walls with doors we got old knob wiring didn't find any tube wiring some of the wires are badly damaged from heat they still alive and active

[hdyudu]

that stuff is an electrical fire waiting to happen it was good stuff back something

year ago but ones modern appliances that required more current with more amperage running threw thim this wiring that when the problems started up

it also not up to fire codes sins it burns like candle wax and falls apart over the years

[HomeInspectorRob]

Good job on the knob & tube description by the way!

[HomeInspectorRob]

Do you service & repair aluminum wiring?

[mainelyelectric]

I have some knob and tube and i have seen the covering go for more then ten feet

i also have instaled it 8 years ago in a little shed next to my house for the lights and it works great and my electrian said i did a great job puting it in!! By the way i'm 20 now peace Ben please reply