I want to run 40 amp to an outbuilding subpanel from my main workshop sub-panel
(2) light circuits;
(3) recpt. circuits;
(1) small mini-split
I don't need 240v here- hand tool workshop
Do I still need to run 4 wire from main panel; the 40 amp breaker is at the main panel, not in the outbuilding
Also, the run is 100', what wires should I run?; underground conduit (1-1/4" is already buried)