ccc = Current Carrying Conductor
See an earlier post for the definition

I know that this can be figured out using cost and labor data, but does anyone have a "rule of thumb" or equiviliant that shows when it's less expensive to go wtih another conduit or to upsize wires/consuit. ie is it better to do your homeruns with #10's in (1) 1" pipe...or run 2 3/4" pipes, etc?