I guess the goal of this is to be environmentally conscious and save copper. While this not be economically feasible or environmentally sustainable, it is a interesting thought experiment on how to save resources.If you want to save wire, just make the control connection wireless.
Yeah, as mentioned a relay or on a larger scale handling up to a few hundred amps a contactor. A coil may draw an amp or less and the contactor may switch 200 amps or more. My generator for my residential home uses a 200 amp contactor to switch from power company mains to my generator power. Just a matter of what load you wish to switch, wired or wireless can all be done.The goal of this idea, is to have a thinner gauge wire going from the primary switch to the secondary switch, thus saving copper wire (in large-scale application E.G. a house's circuitry ).
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