Electric-Light
Senior Member
I recall it had something to do with restrictions on voltage respect to ground of any conductor. In the US, residential wiring does not exceed 120v nominal even on 240v circuits as it is center tapped.
This includes lighting in individual units in large apartment complexes, dormitory etc.
There's not a whole lot of difference between 480Y/277 vs 415Y/240. Every receptacle in just about anywhere outside of North America has the hot conductor 240v floating above ground and they don't really have issues.
This includes lighting in individual units in large apartment complexes, dormitory etc.
There's not a whole lot of difference between 480Y/277 vs 415Y/240. Every receptacle in just about anywhere outside of North America has the hot conductor 240v floating above ground and they don't really have issues.