I was thinking about how wires in DC spot welders jump when you perform a w=
eld, and how it's most likely electromagnetic forces. Then it got me thinki=
ng about how it affects power transmission with long spans between the towe=
rs. Those wires are far enough apart and other losses are dominant, so I'm =
sure it's insignificant.

A very long time ago I needed to wire some loudspeakers and used two strand=
s of some salvaged single conductor insulated solid wire, fairly heavy gaug=
e. When I later replaced it with regular speaker cable of similar gauge, th=
e system sounded better. I wonder now if the wires vibrated enough because =
of the electromagnetic effect that it caused resonances. My ears were prett=
y good back then.

Perhaps I should do some testing and see if I can measure the effect.

Bob

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