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Underwriter's KnotYou may have been a Boy Scout, a Girl Scout, an FFA member, a sailor, or a horse lover, and have probably tied a lot of knots in your day, but it's unlikely that you've ever tied this kind of knot. The Underwriter's knot is a special kind of knot especially designed to keep a light cord from being pulled out of a cord plug. It is the strain relief for the cord on common desk lights and such. So get the wire ready and tie the knot!

If you've ever walked by a light fixture sitting on an end table and tripped over the cord, only to pull the cord right out of the plug, you'll understand why this knot is so useful. The knot prevents the cord from being pulled out and acts like a built-in shock absorber. That's the nice thing about an Underwriter's Knot, they hold the connection tight.

Photo: Timothy Thiele


April 8, 2010 at 2:10 pm
(1) Mark says:

Really, really bad illustration. Two black wires? How do you expect us to be able to follow which wire is which and which is coming and going where? How about a step by step drawing or photos? This example is really only useful if you already know how to tie one.

December 20, 2010 at 9:59 pm
(2) jvill says:

So, this tells us what it is without telling us how to tie it?

January 6, 2011 at 11:13 pm
(3) John says:

Thanks, just what I needed. It’s a simple knot but I can never remember it when I need it.

January 8, 2011 at 9:51 pm
(4) darryl Strasser says:

To figure out the knot, simply look at the picture. It’s pretty self explanatory.

January 21, 2011 at 8:33 pm
(5) nic says:

I could not figure out by the picture shown how to tie this knot

April 3, 2011 at 6:38 pm
(6) Bob G. says:

jvill. WHEN was the last time ya saw a lamp cord in two different colors? To learn how to tie the knot, CLICK on the blue “tie the knot”. In the first paragraph.

April 24, 2012 at 3:27 pm
(7) Hoyt says:

I don’t know what the complaints are about. It took me all of few seconds to tie the knot after looking at the image and I’ve never tied one before.

April 27, 2012 at 2:01 pm
(8) Lennie says:

NOT at hard to tie knot. Canbe used many places,simple as a bowline or clove-hitch..

October 19, 2012 at 7:13 pm
(9) Phil says:

Exactly what I needed, thank you for the post and the picture.

December 15, 2012 at 6:38 pm
(10) Doug says:

Worthless. Even the link to “tie the knot” offers no help. There is a reason there are no text-only books on knots — needs a clear diagram with different color wires.

March 5, 2013 at 2:01 pm
(11) AC says:

Enough debate/complaining/arguing — this is easy to resolve:

A: Google (or whatever) “underwriters knot” and choose “Images” for the search result.

B: You will immediately see MANY other online pix / search-hits that are — imho — MUCH clearer than this one.

C: If you disagree, fine — in fact, please post your objection, & especially your e-mail address (for updating a filter-out database — many thanks! ;-)

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