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I have a 6 in can fan and i am trying to wire it up there is 3 wires but more holes than wires? i see there to be a "N" "L" and wat looks like a plus sign or ground. ( there is a ground but does anyone know how to wire this up? it cam with no diagrams, i bought it used.

can i take clones from my mother plant which is a dwc hydro system and put it into rockwool and transfer it to soil. this might be a dumb question but i could not find the solution anywhere. thanks