2 wire 14 gauge wire for outlets should you be only using 12 2 when can 14 2 vs 12 2 5 differences you should 2 romex wire 2 wire understanding electrical cables and wires home underground wire and cable gauge wires in 1 2 conduit solid romex simpull cu nm b w g wire can i use 14 2 wire for outlets a how to wire 2 single pole switch inside