Underwriter's knot

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Underwriter's knot
NamesUnderwriter's knot, Two-strand wall knot
Relatedwall knot, crown knot
Typical useelectrical
ABoK#237, #775

The underwriter's knot is used in electrical wiring as strain relief to prevent a cable from being pulled from electrical terminals when the cable is yanked.[1] Clifford Ashley listed it as an electrician's knot in 1944. He suggested it be used "where rough treatment is expected" and described it as a two-strand wall knot.[2]

See also[edit]


  1. ^ "Underwriter's Knot Strain Reliefs - What is an Underwriter's Knot - Strain Reliefs". electrical.about.com. Retrieved 2014-01-26.
  2. ^ Ashley, Clifford W. (1944), The Ashley Book of Knots, New York: Doubleday, p. 44

External links[edit]