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-   -   Wire size for 20 amp at 300 ft? (https://www.askmehelpdesk.com/showthread.php?t=616787)

  • Dec 4, 2011, 05:29 AM
    Sparkx
    Wire size for 20 amp at 300 ft?
    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.
  • Dec 4, 2011, 05:56 AM
    tkrussell
    1 Attachment(s)
    Using your values I did a voltage drop calculation here:

    Voltage Drop Calculator

    and arrived at #6 copper:

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