<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Knob & Tube is basically Romex without a ground. If ground can not be run to an outlet, the preferred method of dealing with it is to install a GFCI outlet & not connect the ground screw. I would think the same would work for a GFCI breaker, but I never looked into this. <div><br></div><div>Is the breaker in the main breaker panel? If so, and there is a ground rod attached to that panel, you can connect the breaker’s green wire to it. It is probably also connected to the low side k&t wire. It is not recommended to connect the ground of a GFCI outlet to the low side wire @ the outlet. </div><div><br></div><div>Peace, Pat</div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Pat Horne <div>We support Habitat for Humanity</div><div><br></div></div><div dir="ltr"><br>On Feb 1, 2025, at 2:10 PM, Douglas Shook <dirtbeard@gmail.com> wrote:<br><br></div><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">I could misunderstand the situation, but if B&T is in place, there would be no ground at the sink for the GFI to work unless you ran a separate ground to the cold water supply line or something similar assuming it is grounded.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sat, Feb 1, 2025 at 10:56 AM Jimmie Mayfield <<a href="mailto:mayfield%2Bshoptalk@sackheads.org">mayfield+shoptalk@sackheads.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<div>The fly in the ointment is the k&t
wiring. Will a GFI or AFI breaker work reliably with k&t?<br>
</div>
<div><br>
</div>
<div>J</div>
<div><br>
</div>
<div><br>
</div>
<div>On 2/1/25 11:36, Jim Franklin wrote:<br>
</div>
<blockquote type="cite">
If you shut off the breaker, confirm there is no voltage on the
output side of it, and test for continuity between the breaker
output and ground, you should get a good idea if the breaker is
actually doing its job, i.e. there's short somewhere. If you don't
see continuity, it's an unknown, in which case I'd replace it with
a GFI breaker (since you want to do that anyway) and see what
happens.
<div><br>
</div>
<div>jim<br>
<div><br>
<blockquote type="cite">
<div>On Feb 1, 2025, at 11:03 AM, Tim .
<a href="mailto:tims_datsun_stuff@outlook.com" target="_blank"><tims_datsun_stuff@outlook.com></a> wrote:</div>
<br>
<div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt">The
breaker that controls my sink grinder's outlet seems to
have failed. It won't reset. </div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt"><br>
</div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt">It
is simply a matter of replacing the breaker with a new
one or might there be another issue in the circuit? Near
as I can tell that breaker only has one outlet on it.
(house was built in 1905 or so and still has active knob
and tube. ffs. And there are at least four breakers
controlling our tiny kitchen.) Also, the outlet is not
GFI so I want to replace it but can't really fit under
the sink to do it. </div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt"><br>
</div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt">So,
can I just replace the breaker or should I bite the
bullet and call and electrician?</div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt"><br>
</div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt">Thanks</div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Helvetica,sans-serif;font-size:12pt">tim</div>
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