North American power plugs known as NEMA connectors. Interesting about new safety regulations, tamper-resistant plugs that use a spring-loaded shutter disconnecting the terminals. Arc fault protection that is more nuanced than circuit breaking only on current, if there is a leak through a frayed power cord for example. And leak current detection power cords that can detect if current is leaking through a frayed power cord, thus preventing a fire by that means.
https://en.wikipedia.org/wiki/NEMA_connector