We adopted the Southern Standard Building Code s many years ago I have forgotten but it was 10 gauge, Romex and so on. Right after that the new International (garbage) building code was forced on everyone. I don't really know all that was in it. however our new home built in 2007-2008 has ten gauge wiring to all plugs and switches. I know because they used the cheapest Chinese switches available in 2008 from Lowes. I've had to replace two so far and I'm not as stout as I use to be. Our LEO came by and twisted those stiff wires around for me in that small box.
If I was to buy another new home it would be a custom builder using the old codes.Not the International Building code for cardboard and particle board houses made to last until the mortgage is paid off.