Re: The Audiophoolery Thread.
I've just broken open a 13A (regular!) fuse, and the wire in there is 0.4mm diameter or 0.126mm^2. Assuming that it is copper, and the full 13A flows, the electrons will shuffle back and forth by 66um x 1.3 / 0.126 = 680um or 0.68mm.
Of course, the fuse is normally there to protect against fault conditions in the power cord, and normal running current is significantly less than that for any domestic audio gear. So the electron motion is back to a few tens of microns.
Craig
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