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Everyone knows that the implementation of this knot consists of 5 Important or Major Steps.5 авг. 2018 г.

n. a simple knot of various uses that slips easily. Also called single knot.

Function. The knot is typically used for tying lamp or appliance cords where they join the plug or socket. Its purpose is to "reduce strain on the screw terminal connections—where the metal parts of the wires connect to the socket or plug—and prevent the wires from pulling free."

Strain Relief That Holds

An underwriter's knot may seem like an old-fashioned electrician's trick (and indeed it is), but it's necessary today because people still pull out plugs by pulling on the cord, and they still abuse lamp cords in one way or another.26 нояб. 2019 г.

Two insulated-copper leading wires wrapped together with paraffined cotton covering.

You can identify the neutral side of the wire just by looking for markings on one of the wires. The most common identifier is ribbing in the rubber insulation all along one edge, but it can also be a white wire or a white stripe (photo below).

• Presumably, it was given the name underwriter’s knot by fire underwriters who knew the importance of the knot in preventing the danger of electrocution and fire. The diagram shows you the step by step tying procedure of the knot in a two strand wire.

• Historically, the best-known version of the Job Breakdown Sheet for the underwriter’s knot (Figure 1) is an example that was published in 1944 in amanual named “Job Instruction”. It contains the Important Steps and Key Points for the tying process and was used in trainings conducted during the war program for industry in the USA.

• This ensures the knot will be symmetrical and will tighten into a compact knot. Here are the basic steps for making an underwriter's knot: Slide the body of the plug over the end of the cord before making the knot. If you're installing a lamp cord, insert the cord into the socket base and slide the socket down onto the cord.