and special circuit breakers can also provide GFCI protection. The NEC continually updates GFCI safety requirements, so if you’re worried, verify any questions with an experienced electrician.

Replace with a ground-fault circuit-interrupter (GFCI) receptacle This significantly improves safety. You won't have a grounding means for your appliances, but the GFCI provides shock protection ...

See? Good and evil. An RCD (or GFCI in the States) is a kind of circuit breaker that trips when the amount of current in the hot and neutral mains power lines aren’t equal and opposite ...