PDA

View Full Version : Wire size for 20 amp at 300 ft?

Sparkx
Dec 4, 2011, 05:29 AM
What size wire should be used to wire up a boat lift that needs 240 20 amp that is 300 ft away from source. Will be in pipe above ground.
tkrussell
Dec 4, 2011, 05:56 AM
Using your values I did a voltage drop calculation here:

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

and arrived at #6 copper: