1. What wire size do I need to run to install a 240 volt-60amp sub-panel 250' from the 100 amp main panel in the garage?
  2. Direct burial or conduit or both?
  • You need #6Cu or #4Al for safety, but that says nothing about voltage drop. How much power do you intend to actually draw from it on a regular basis? Also how deep do you want to trench this, 26", 20", or 8" and pay more for the conduit? – Harper Apr 25 at 20:43
  • Are your conditions conducive to trenching? What is this subpanel powering, for that matter? – ThreePhaseEel Apr 25 at 23:04

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