Came up with 750kcmil aluminum for a 1ø 240V 4000-foot-total {2x2000} loop sized at 3% running ΔV@0.90PF and 15% starting ΔV@0.30PF
Used Franklin Electric "assumed typical" online data
Calculated using IEEE short method for voltage drop [basic trig—Red Book]
If you’d like to check my figures, email me. I can send a link to an very-slightly-commented .xls [motor links included] file. {Sorry—it’s not intended as tutorial material…some trig functions used.}
—Bjarn
