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Why do the high frequency users use Litz wire in their power transformers? Why do we use laminated busbars for high current high frequency equipment? Why do you think generator and transformer manufacturers go to the trouble of using expensive Roebel conductors? Because using plain conductors is boring? Because they have too much money?
And the last comment is somewhat ironic. As we know, stranded wire has higher dc resistance per unit length than solid conductor of the exact same circular mil cross section (or same weight) due to the very reason that there is an insulating effect between the strands (so the effective length of the conductor is longer since it has to spiral around following the strand instead of traveling straight).They are conductors. One touches its neighbour, which in turn touches its neighbours. Thus they are all electrically in contact with each other over anything more than a few inches of cable. Do you need a picture to help explain that? In fact, don't take my word for it, try it with a multimeter and prove it for yourself.
Different ohmic resistances per unit length are due to differences in the cross section of copper in the conductor. I thought that would be pretty obvious.
I guess your last question was a rhetorical one, since apparently you were so uninterested in the answer that you screamed at the people who gave it to you.dickdv said:davidbeach, I doubt your claim that stranded wire has a beneficial effect at high frequencies simply due to the fact that, for skin effect to operate, the skin can't be shorted to anything else over its length. Clearly, a strand in the middle of a bundle has no "skin" since it is all shorted to adjacent conductors.
Or am I missing something here?