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kirklewellen
Apr 7, 2011, 08:05 PM
I am trying to power a 240v well pump 1100' from a breaker box. What type of wire and breaker should I use. Currently I have 10-2 run about 350' to a junction where I atttach a generator. I am trying to conver a span of 750' from my breaker to the existing junction.

tkrussell
Apr 8, 2011, 02:35 AM
Need to know the amperage draw of the motor, or you can use this calculator:

Southwire - Delivers Power (http://www.southwire.com/ProductCatalog/voltdrop.jsp)

For example, a 10 amp load at 240 volts and 1100 feet will need a minimum of #2 aluminum.