What is the main wiring plan for houses to ensure that each receptacle and light socket is the same voltage?

Every outlet, receptacle, lamp, appliance, and other directly wired device in the house must all be connected in parallel.

- - This ensures that each receptacle and light socket is supplied the same voltage.

- - It also ensures that turning off or unplugging one device won't cut off the power to a bunch of others in the house.