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John,
I am buying a home in NJ and it has 50% knob and tube wiring. It took me 3 weeks to find an insurance company to insure the wiring. The cost is $1800 for 6 months of coverage. The cost for replacing is 8,500. I close in December and it will be replaced in January-February. My policy will go down to $600 for a year. I agree with the others, coverage is impossible or unaffordable.
Does anyone know how to locate Knob and Tube with a device from the interior? Or just any wiring in general from the interior?
If so you know where it is so you can put insulation in the unaffected areas. —Preceding unsigned comment added by 66.92.183.226 ( talk) 01:40, 13 November 2008 (UTC)
While trying to find a source for the statement that K&T wiring is still permitted by the NEC in certain cases (I put a citation needed tag for now), I stumbled across an external site ( http://www.nachi.org/knob-and-tube.htm) that starts with an identical first sentence to this article other than the end date being changed (1930s to 1940s) and a couple of words removed from (K&T). Which came first? Did they copy Wikipedia or the other way around? —Preceding unsigned comment added by Sfisher ( talk • contribs) 15:36, 10 June 2010 (UTC)
Similarly, http://www.knobandtubewiring.ca/ is substantially similar to this article. — Preceding unsigned comment added by 199.246.40.54 ( talk) 16:19, 27 February 2012 (UTC)
The result of the move request was: moved. Number 5 7 10:20, 16 February 2015 (UTC)
Knob and tube wiring →
Knob-and-tube wiring – add hyphenation for good luck
76.120.164.90 (
talk) 20:27, 8 February 2015 (UTC)
Arc fault circuit interrupters are now required for all new home construction in the 2014 NEC to reduce the risk of arc related fires, the most common cause of electrical fires.
AFCIs can also potentially protect old K&T wiring from arc fires. Is it acceptable to uses AFCIs with K&T? It would certainly seem to be the case, and AFCIs probably should be used to upgrade and protect old circuits where feasible.
If so, how would that work? Are screw-in fuse replacement AFCIs available? Are new circuit breaker panels with AFCIs permitted to connect to existing K&T ?
-- DMahalko ( talk) 21:52, 24 November 2016 (UTC)
"such porcelain standoffs carry far higher voltage surges without risk of shorting to ground" -- higher than what? If this is supposed to be a comparison to another insulation method, that method needs to be specified. Or is it just trying to say "carry very high voltage surges"? 2605:A601:4100:3300:2306:3E9B:EE82:C306 ( talk) 00:16, 26 November 2016 (UTC)
Article says used in North America - Was it just USA or was it used in Canada too, and Great Britain ? - Were there any national or state wiring regulations 1880-1930's ? - Rod57 ( talk) 10:12, 17 September 2018 (UTC)
I'm sceptical of the relevance to 'K&T' of some of the 'disadvantages', especially 'never included a safety grounding conductor', which seems an orthogonal issue; it was rather 'was used at a time when safety grounding conductors were not', surely - there doesn't seem to be anything inherent in the system that mean you couldn't/wouldn't have a third tube for earth? If that passes as a disadvantage, surely 'single phase only' should be another. -- OJFord ( talk) 15:00, 6 August 2021 (UTC)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||
|
John,
I am buying a home in NJ and it has 50% knob and tube wiring. It took me 3 weeks to find an insurance company to insure the wiring. The cost is $1800 for 6 months of coverage. The cost for replacing is 8,500. I close in December and it will be replaced in January-February. My policy will go down to $600 for a year. I agree with the others, coverage is impossible or unaffordable.
Does anyone know how to locate Knob and Tube with a device from the interior? Or just any wiring in general from the interior?
If so you know where it is so you can put insulation in the unaffected areas. —Preceding unsigned comment added by 66.92.183.226 ( talk) 01:40, 13 November 2008 (UTC)
While trying to find a source for the statement that K&T wiring is still permitted by the NEC in certain cases (I put a citation needed tag for now), I stumbled across an external site ( http://www.nachi.org/knob-and-tube.htm) that starts with an identical first sentence to this article other than the end date being changed (1930s to 1940s) and a couple of words removed from (K&T). Which came first? Did they copy Wikipedia or the other way around? —Preceding unsigned comment added by Sfisher ( talk • contribs) 15:36, 10 June 2010 (UTC)
Similarly, http://www.knobandtubewiring.ca/ is substantially similar to this article. — Preceding unsigned comment added by 199.246.40.54 ( talk) 16:19, 27 February 2012 (UTC)
The result of the move request was: moved. Number 5 7 10:20, 16 February 2015 (UTC)
Knob and tube wiring →
Knob-and-tube wiring – add hyphenation for good luck
76.120.164.90 (
talk) 20:27, 8 February 2015 (UTC)
Arc fault circuit interrupters are now required for all new home construction in the 2014 NEC to reduce the risk of arc related fires, the most common cause of electrical fires.
AFCIs can also potentially protect old K&T wiring from arc fires. Is it acceptable to uses AFCIs with K&T? It would certainly seem to be the case, and AFCIs probably should be used to upgrade and protect old circuits where feasible.
If so, how would that work? Are screw-in fuse replacement AFCIs available? Are new circuit breaker panels with AFCIs permitted to connect to existing K&T ?
-- DMahalko ( talk) 21:52, 24 November 2016 (UTC)
"such porcelain standoffs carry far higher voltage surges without risk of shorting to ground" -- higher than what? If this is supposed to be a comparison to another insulation method, that method needs to be specified. Or is it just trying to say "carry very high voltage surges"? 2605:A601:4100:3300:2306:3E9B:EE82:C306 ( talk) 00:16, 26 November 2016 (UTC)
Article says used in North America - Was it just USA or was it used in Canada too, and Great Britain ? - Were there any national or state wiring regulations 1880-1930's ? - Rod57 ( talk) 10:12, 17 September 2018 (UTC)
I'm sceptical of the relevance to 'K&T' of some of the 'disadvantages', especially 'never included a safety grounding conductor', which seems an orthogonal issue; it was rather 'was used at a time when safety grounding conductors were not', surely - there doesn't seem to be anything inherent in the system that mean you couldn't/wouldn't have a third tube for earth? If that passes as a disadvantage, surely 'single phase only' should be another. -- OJFord ( talk) 15:00, 6 August 2021 (UTC)