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Western Union/Lineman Splice
The Western Union or Lineman splice was developed during the introduction of the telegraph to mechanically terminate aerial conductors that were subject to loading stress. The wrapping pattern is designed to cause the termination to tighten as the conductors pull against each other. This type of splice is more suited to solid, rather than stranded conductors, and is fairly difficult to complete. The termination shall comply with all the requirements of NASA-STD-8739.3 for a solder termination, including the following: a. The conductor ends shall be parallel to, and in contact with, each other.
b. The conductors shall exhibit proper insulation spacing.
c. The wraps shall be tight, with no gaps between adjacent turns. The wraps shall not overlap, and the ends of the wrap shall be trimmed flush prior to soldering to prevent protruding ends.
d. The completed solder termination and any exposed metallization shall be over-sleeved with transparent / translucent heat shrink tubing.
e. The termination shall not be located in a flexure zone and shall be provided acceptable stress relief.
Testing to determine Lineman Splice 22 AWG wire pre-solder condition compared to Lineman Splice 22 AWG wire post-solder condition
In order to determine the reliability of the Lineman Spliced connections pull testing was performed on 5 samples of Lineman Splices with 22 AWG wire compared to the tensile strength of an unspliced piece of 22 AWG wire. The same testing was also performed on 5 samples of Lineman Splices with 16 AWG wire compared to the tensile strength of an unspliced 16 AWG wire. The results are as follows:
� The average tensile strength of the 22AWG wire un-spliced was 20.7 lbs and the average tensile strength of the 16 AWG wire un-spliced was 62.6 lbs. � The average tensile strength of the wire before breakage was 17.7 lbs for the Linman splice using 22 AWG, and 58.9 lbs for the Lineman splice using 16 AWG. (See summary below) � There were no failures at the splice area where the solder connection was made. In every sample the wire broke outside the splice area usually close to the point where the wire was secured to the pull tester.
As one can see the tensile strength of the spliced wire is very close to the tensile strength of the un-spliced wires.
It is thought that the reason the spliced wire did not meet the tensile strength of the un-splice wires is due to the slight offset of the wires at the splice causing an uneven stress where the wires were being held in the pull test fixture.
Conclusion:
In no case was there any failure of the wires at the splice connection. In every splice sample the wire break was outside the splice area. The tensile testing showed that the solder connection at the splice was as strong or stronger than the un- spliced wires and there is no reliability issue associated with this type of splice. Based on this study Lineman Splicing can be a reliable, secure means of splicing wires together.
Wire Gauge Average Tensile strength(Un-spliced Wire) Average Tensile strength (Lap Splice)
22 AWG 20.7 lbs 17.7 lbs
16 AWG 62.6 lbs 58.9 lbs
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∙ 11y ago
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Some pictures of common wire splices?
rat tail splice western union splice
What is a wire Lap Splice?
It is the same type as the western union splice, where the two wires are overlapping and wound back on the opposite conductor.
How do you splice thermocouple wire?
One splice that would work is a western splice.
Different kinds of splices and joints?
The four types of splices and joints are the Western Union splice, tap splice or tap joint, fixture splices or fixture joints, and rattail joint. The most common among the four wire splices is the Western Union splice.
What are the different kinds of splice?
The five most known are the rattail joint, the western union, the fixture joint, the knotted tap and the staggered splice. Then there are crimping, wire-nutting, soldering, sty-cons.
What are the different splice of wires?
The five most known are the rattail joint, the western union, the fixture joint, the knotted tap and the staggered splice. Then there are crimping, wire-nutting, soldering, sty-cons.
What is a Western Union long tie splice?
Put a 90 degree bend on the two wire ends. Interlock the two ends together. Wind the opposite tail ends tightly from the 90 degree bend up onto the opposite wire. This was the old Western Union Telegraph splice that was used to repair broken telegraph wires.
What are the different kinds of wiring splices?
The five most known are the rattail joint, the western union, the fixture joint, the knotted tap and the staggered splice. Then there are crimping, wire-nutting, soldering, sty-cons.
Western union short-tie splice?
I'm basing this on 12 gauge wire. To make a western union short tie splice take approximately 3 inches of exposed wire on the two wires you plan on connecting. about half way bend each wire to a 90 degree angle. Cross the wires at the bends so one faces up and one faces down. Wrap the excess wire from each one around around the wire it is going to connect to. You should get about three wraps on each side. Solder and shield as necessary.
What are the types of electrical splices?
pig tail jointrattail jointplain tap or tee joint-_-etc.......AnswerBoth terms describe connections between conductors. The term 'splice' tends to be used in North America, whereas the term 'joint' tends to be used in the UK. For high-voltage cables, the tradesmen are known as 'splicers' (North America) or 'jointers' (UK).
Western union turnhout?
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Is there a western union in the acores?
Western union nos Azores
