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jaime05121970
Jan 10, 2012, 07:47 PM
I have to feed a pump it has a load of 30 amps, is 115 volts and is located 1300 feet.

ballengerb1
Jan 10, 2012, 08:30 PM
You have not given us all the info we would need to be accurate by try this calculator for yourself. Voltage Drop Calculator (http://www.csgnetwork.com/voltagedropcalc.html) 2 awg aluminium would give you about a 9% drop in voltage.

tkrussell
Jan 11, 2012, 05:29 AM
I am not sure how Ballenger came up with 9% Vd with #2 Al.

Using the same calculator I arrive at 17.7 % Vd using #2 Al at 120 volts, 30 amp load, 1300 feet.

Recommended voltage drop is 3%, and I arrive at needing 1000 MCM Al wire ,using this calculator:

Voltage Drop Calculator (http://www.southwire.com/support/voltage-drop-calculator.htm)

In any case, you need to look into using transformers at both ends to step up to a higher voltage at the feed end and as tep down transformer at the load end.

Trying to deliver 120 volts 1300 feet is not practical.