Jerry KES
Member
- Location
- Bloomington, In.
With a 480v source at a distance of 450 ft. to a 240v transformer, what size wire should be pulled? The xfrmr is feeding a 200 amp panel which is mainly be for lighting circuits.
What's the calculated load? Voltage drop is a function of impedance and current.With a 480v source at a distance of 450 ft. to a 240v transformer, what size wire should be pulled? The xfrmr is feeding a 200 amp panel which is mainly be for lighting circuits.
Thanks for the link to the calculator, but I am still wondering what I am doing wrong doing it by hand:
cm=2 x 12.9 x D x I / VD
2 x 12.9 x 450 x 100 = 1,161,000 / .03 = 38,700,000 cir mils??????