length of 30 amp line

Old-Biscuit wrote:
120V 30A 3% Voltage Drop

#10 wire------25'
#8 wire------50'
#6 wire-----100'

I'd be interested in knowing the source of this information as this Voltage Drop Calculator which is particularly easy to use indicates a considerably different result, as shown in this screenshot.



However, even more pertinent to this discussion is the fact that if one halves maximum current draw from 30 amps to 15 amps then cable length can double, as I typically so often do by limiting our use of high draw devices to just one at any given time.