tinned copper wire

Does the tin coating in tinned coated copper wire or tinned coated copper connector afect the resistance or conductivity ? Or will it work just fine.

Thanks a lot

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Javier Castro

think of it like this. current is passed thru wire much like bouncing a ball down a hallway. with a large hallway ( one strand of big gauge wire) if you attempt to get 500 balls down the large hallway all at the same time they bounce off each other and the walls. with 500 small hallways which have enough room to barely let a ball thru and 500 balls they wont run into each other and its pretty much a straight shot. in essence the answer to your question is yes. but the amount that it will effect it is so minimal it would take a league of equipment to actually see it. if its just tinned ends that you are soldering together its not a big enough resistance to tell. as far as conductivity i believe copper is a better conductor than solder but again its extremely small since electricity travels so fast and your only talking about a quarter inch or so of tinned wire which also has copper as its core. so again no. not really. someone correct me if im wrong

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zombies will eat your brains if not decapitaded first

If only balls were involved (ie, physical objects)....

Although tin (solder etc) has less conductivity than copper (I think), tinning is usually over standard copper conductors, hence it adds - not removes - conductivity.

The difference however should be negligible due to the tinning's thinness - including getting into to copper core.


A bigger effect would be oxidisation - which oxidises more to provide an insulative or less conductive interface?

Any difference in conductivity is completely negligible.  The purpose of using tinned wire is it raises the max temperature rating it can handle.

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