2 wire 14 gauge wire for outlets 14 2 vs 12 2 5 differences you should visual comparison of wire sizes the should you be only using 12 2 when can understanding electrical cables and wires 2 romex wire 2 wire 14 2 uf b outdoor direct burial wire solid romex simpull cu nm b w g wire gauge wires in 1 2 conduit southwire 100 ft 14 2 solid uf wire