What wire to use ?
 

I am looking to make a switch that can switch on and off anything plugged into a 110vac 15amp wall plug. The switch will interrupt the smaller (hot) pin. I need to know if I need to use 14 gauge (15 amp) wire since it could be used for anything or can I get away with a smaller profile 16 gauge or 18 gauge wire>
Thanks,

What do you want to switch?

For a cell phone charger, you could probably use 22 g. For a hairdryer, 16 g is a good idea. Doubt you'd really need 14 g.