Re: extension cord powered tractor

[ snip ....  regarding voltage and current drop 
over the extended distance ]

hence the use of 480 volts (and similar numbers,
depending on the country) for high demand applications.

Note that, in the US at least, common types of
wire, normally used for 120/240 volts,  are 
actually rated for 600 volts (RMS), so you can
push 480 volts w/o having to use super 
special cabling.


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