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#41277 - 08/23/04 09:37 PM K&T AFCI/GFCI?
e57 Offline

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
Just wondering about this, haven't come across a situation lately where I kept K&T, but could/should it be AFCI/GFCI'ed at the breaker?

Anyone have an opinion on that?
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#41278 - 08/24/04 03:10 AM Re: K&T AFCI/GFCI?
zapped208 Offline

Registered: 02/18/03
Posts: 201
Loc: Somewhere in USA
Thats a good question, don't know , never tried it. IMO, it might not work due to the fact that polaritys are always crossed at times in K&T wiring,and also switched neutrals, encountered in old homes, and hot 3 ways.
Shoot first, apologize later.....maybe

#41279 - 08/24/04 12:51 PM Re: K&T AFCI/GFCI?
earlydean Offline

Registered: 12/22/03
Posts: 749
Loc: Griswold, CT, USA
Arc fault breakers should still work with K and T.
Ground fault breakers might not work if the neutral and hot polarity is switched. Best to use GFCI receptacles, after determining the correct polarity.

#41280 - 08/24/04 01:31 PM Re: K&T AFCI/GFCI?
SteveMc Offline

Registered: 02/05/04
Posts: 61
Loc: Rock Hill, SC
Also be forewarned, a lot of the old metal boxes aren't large enough to accommodate a GFCI receptacle.

#41281 - 08/24/04 05:45 PM Re: K&T AFCI/GFCI?
twh Offline

Registered: 03/11/04
Posts: 895
Loc: Regina, Sask.
When I change a panel and there is K&T I put a GFI switch on the K&T, by the panel. The only problem is that sometimes the circuits share a neutral, or two.

When I add a bedroom plug, I put the K&T for the bedroom on the AFCI with the new plug. Same problem with shared neutrals.

Haven't had any problems with polarity.


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