Yeah..I thought about that. I used a slightly larger gauge. My thought was that anything spliced increased the resistance. The splices have resistance and the extra length has resistance. the best thing we could splice in would be a super conductor since that extra length would not change anything. I’m fresh out of super conductor though
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So this is my thought. The best way to ensure a similar resistance from one point to another while adding length through a splice would be to use a slightly larger splice wire and cut a little of the original wire.
SUPER SIMPLIFIED MATH
X = original resistance of the wire
X + Y = resistance of splice + original
If our goal is zero change and Y always imparts change into the system, then a strategy could be to reduce the resistance of X. Easiest way to do that is make it shorter.
FWIW...I just spliced in about 3 inches of slightly larger gauge wire, and trimmed off about about 1/2-3/4 inch of mangled stuff and it works great.