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The referenced article indicates the reason for not soldering lugs onto a wire – the heat from soldering can heat harden the wire and cause it to fail. Unless the wire is securely fastened to the same object that the termination is made, there will be flexure of the wire. While doing seismic testing of cabinets (with very low and sub sonic frequency shaking) you could see (with the aid of a strobe-light, highs-peed film and/or other equipment) the movement and flexure of the wire. Even with less than 2 inches of separation! The heat treating hastens the failure.
All of the above assumes you are using the proper lug/die/crimper and it is CALIBRATED to the setting you need. Using your big-box auto store crimper/lug you are on your own. But since we were talking about using the proper APP crimper I thought I would through in my two-cents about soldering the connection after proper crimping.
However the main thrust of my first post was “Why use butt connections to reduce the size (increase the gauge number) when all you need do is remove a few strands.” The extra connections make extra failure points and it’s going to a connector that has a lower amp rating anyway.
Rich,
KE0X
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