I have a power supply that has only screw terminals for its AC mains input. Currently I'm using a power cord from a computer that I cut the female end off of and attached fork terminals to (live, neutral, and ground). It works fine but now I'd like to add a rocker-type switch to the cord so I don't have to unplug it whenever I turn it off.
Is it better to use a DPST-type switch to simultaneously connect/disconnect the live and neutral wires or is a SPST-type switch fine? If an SPST is ok, does convention and/or code prefer attaching it to the live or neutral wire?